From a238a2cc59008b71efa5bda4c1fc0d775467e504 Mon Sep 17 00:00:00 2001
From: Alexander Pann <apann@itemis.com>
Date: Mon, 4 Nov 2024 07:48:54 +0100
Subject: [PATCH 1/5] mbeddr.mpsutil: add a new language
 com.mbeddr.mpsutil.collections that provides nset

---
 CHANGELOG.md                                  |    8 +
 .../com.mbeddr.platform.tests.build.mps       |  125 +-
 .../models/com/mbeddr/platform/build.mps      |  286 ++
 .../com.mbeddr.mpsutil/.mps/modules.xml       |    3 +
 .../com.mbeddr.mpsutil.collections.mpl        |  160 +
 ...lections.generator.templates@generator.mps |  209 +
 ...om.mbeddr.mpsutil.collections.behavior.mps |  532 +++
 ...mbeddr.mpsutil.collections.constraints.mps |   19 +
 .../com.mbeddr.mpsutil.collections.editor.mps |  170 +
 ...m.mbeddr.mpsutil.collections.structure.mps |   76 +
 ....mbeddr.mpsutil.collections.typesystem.mps |  688 +++
 ...com.mbeddr.mpsutil.collections.runtime.msd |   52 +
 ...com.mbeddr.mpsutil.collections.runtime.mps | 1440 ++++++
 ...com.mbeddr.mpsutil.collections.runtime.mps | 3968 +++++++++++++++++
 ...com.mbeddr.mpsutil.collections.runtime.msd |   59 +
 15 files changed, 7780 insertions(+), 15 deletions(-)
 create mode 100644 code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/com.mbeddr.mpsutil.collections.mpl
 create mode 100644 code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/generator/templates/com.mbeddr.mpsutil.collections.generator.templates@generator.mps
 create mode 100644 code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.behavior.mps
 create mode 100644 code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.constraints.mps
 create mode 100644 code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.editor.mps
 create mode 100644 code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.structure.mps
 create mode 100644 code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.typesystem.mps
 create mode 100644 code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/com.mbeddr.mpsutil.collections.runtime.msd
 create mode 100644 code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/models/com.mbeddr.mpsutil.collections.runtime.mps
 create mode 100644 code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps
 create mode 100644 code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/test.com.mbeddr.mpsutil.collections.runtime.msd

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1332cd27151..ca5f58e0266 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,14 @@ All notable changes to this project will be documented in this file.
 The format is _loosely_ based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/). The project does _not_ follow
 Semantic Versioning and the changes are simply documented in reverse chronological order, grouped by calendar month.
 
+# November 2024
+
+## com.mbeddr.mpsutil
+
+### Feature
+
+- A new language `com.mbeddr.mpsutil.collections` was added that adds support for a set type `nset` that use nodes as the values of the set. Equivalence of nodes is checked structurally. The hash code calculation is done for all properties and children and the first level of references. The runtime solution also contains a more general class `EquivalenceHashSet` to implement hashsets with arbitrary `equals` and `hashcode` methods.
+
 # October 2024
 
 ## com.mbeddr.mpsutil
diff --git a/code/languages/com.mbeddr.build/solutions/com.mbeddr.platform.tests.build/models/com.mbeddr.platform.tests.build.mps b/code/languages/com.mbeddr.build/solutions/com.mbeddr.platform.tests.build/models/com.mbeddr.platform.tests.build.mps
index 0c365eb2b5f..82029e811ed 100644
--- a/code/languages/com.mbeddr.build/solutions/com.mbeddr.platform.tests.build/models/com.mbeddr.platform.tests.build.mps
+++ b/code/languages/com.mbeddr.build/solutions/com.mbeddr.platform.tests.build/models/com.mbeddr.platform.tests.build.mps
@@ -1533,6 +1533,21 @@
             <ref role="3bR37D" to="ffeo:7Kfy9QB6KXW" resolve="jetbrains.mps.lang.core" />
           </node>
         </node>
+        <node concept="1SiIV0" id="bHMJKhDDfb" role="3bR37C">
+          <node concept="3bR9La" id="bHMJKhDDfc" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6L9O" resolve="jetbrains.mps.lang.smodel" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="bHMJKhDDfd" role="3bR37C">
+          <node concept="3bR9La" id="bHMJKhDDfe" role="1SiIV1">
+            <ref role="3bR37D" to="al5i:vOGyTeKPEA" resolve="com.mbeddr.mpsutil.ecore.testing" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="bHMJKhDDff" role="3bR37C">
+          <node concept="3bR9La" id="bHMJKhDDfg" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6LaO" resolve="jetbrains.mps.lang.structure" />
+          </node>
+        </node>
         <node concept="398BVA" id="bHMJKhDAXY" role="3LF7KH">
           <ref role="398BVh" node="7hVsScEQJ6E" resolve="mbeddr.mpsutil" />
           <node concept="2Ry0Ak" id="bHMJKhDAYF" role="iGT6I">
@@ -1583,21 +1598,6 @@
             </node>
           </node>
         </node>
-        <node concept="1SiIV0" id="bHMJKhDDfb" role="3bR37C">
-          <node concept="3bR9La" id="bHMJKhDDfc" role="1SiIV1">
-            <ref role="3bR37D" to="ffeo:7Kfy9QB6L9O" resolve="jetbrains.mps.lang.smodel" />
-          </node>
-        </node>
-        <node concept="1SiIV0" id="bHMJKhDDfd" role="3bR37C">
-          <node concept="3bR9La" id="bHMJKhDDfe" role="1SiIV1">
-            <ref role="3bR37D" to="al5i:vOGyTeKPEA" resolve="com.mbeddr.mpsutil.ecore.testing" />
-          </node>
-        </node>
-        <node concept="1SiIV0" id="bHMJKhDDff" role="3bR37C">
-          <node concept="3bR9La" id="bHMJKhDDfg" role="1SiIV1">
-            <ref role="3bR37D" to="ffeo:7Kfy9QB6LaO" resolve="jetbrains.mps.lang.structure" />
-          </node>
-        </node>
       </node>
       <node concept="1E1JtD" id="4JHJliM0jp_" role="2G$12L">
         <property role="BnDLt" value="true" />
@@ -2884,6 +2884,101 @@
           </node>
         </node>
       </node>
+      <node concept="1E1JtA" id="4JmsWjEwl1e" role="2G$12L">
+        <property role="BnDLt" value="true" />
+        <property role="TrG5h" value="test.com.mbeddr.mpsutil.collections.runtime" />
+        <property role="3LESm3" value="f88d18b6-41df-491c-ad99-c292037bf751" />
+        <node concept="398BVA" id="4JmsWjEwl1W" role="3LF7KH">
+          <ref role="398BVh" node="7hVsScEQJ6E" resolve="mbeddr.mpsutil" />
+          <node concept="2Ry0Ak" id="4JmsWjEwl3k" role="iGT6I">
+            <property role="2Ry0Am" value="solutions" />
+            <node concept="2Ry0Ak" id="4JmsWjEwl4F" role="2Ry0An">
+              <property role="2Ry0Am" value="test.com.mbeddr.mpsutil.collections.runtime" />
+              <node concept="2Ry0Ak" id="4JmsWjEwl62" role="2Ry0An">
+                <property role="2Ry0Am" value="test.com.mbeddr.mpsutil.collections.runtime.msd" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEwli6" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEwli7" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:1H905DlDUSw" resolve="MPS.OpenAPI" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEwli8" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEwli9" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6KXW" resolve="jetbrains.mps.lang.core" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEwlia" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEwlib" role="1SiIV1">
+            <ref role="3bR37D" to="al5i:13oTmDlqC$D" resolve="com.mbeddr.mpsutil.collections" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEwlic" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEwlid" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6KYb" resolve="jetbrains.mps.baseLanguage" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEwlie" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEwlif" role="1SiIV1">
+            <ref role="3bR37D" to="al5i:13oTmDlqAt2" resolve="com.mbeddr.mpsutil.collections.runtime" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEwlig" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEwlih" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:ymnOULAU0H" resolve="jetbrains.mps.lang.test" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEwlii" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEwlij" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6L0h" resolve="jetbrains.mps.baseLanguage.collections" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEwlik" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEwlil" role="1SiIV1">
+            <ref role="3bR37D" to="90a9:6fQhGuklQWU" resolve="de.q60.mps.collections.libs" />
+          </node>
+        </node>
+        <node concept="1BupzO" id="4JmsWjEwliC" role="3bR31x">
+          <property role="3ZfqAx" value="models" />
+          <property role="1Hdu6h" value="true" />
+          <property role="1HemKv" value="true" />
+          <node concept="3LXTmp" id="4JmsWjEwliD" role="1HemKq">
+            <node concept="398BVA" id="4JmsWjEwlim" role="3LXTmr">
+              <ref role="398BVh" node="7hVsScEQJ6E" resolve="mbeddr.mpsutil" />
+              <node concept="2Ry0Ak" id="4JmsWjEwlin" role="iGT6I">
+                <property role="2Ry0Am" value="solutions" />
+                <node concept="2Ry0Ak" id="4JmsWjEwlio" role="2Ry0An">
+                  <property role="2Ry0Am" value="test.com.mbeddr.mpsutil.collections.runtime" />
+                  <node concept="2Ry0Ak" id="4JmsWjEwlip" role="2Ry0An">
+                    <property role="2Ry0Am" value="models" />
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="3qWCbU" id="4JmsWjEwliE" role="3LXTna">
+              <property role="3qWCbO" value="**/*.mps, **/*.mpsr, **/.model" />
+            </node>
+          </node>
+        </node>
+        <node concept="3rtmxn" id="7MFd5ixyTnb" role="3bR31x">
+          <node concept="3LXTmp" id="7MFd5ixyTnc" role="3rtmxm">
+            <node concept="3qWCbU" id="7MFd5ixyTnd" role="3LXTna">
+              <property role="3qWCbO" value="icons/**, resources/**" />
+            </node>
+            <node concept="398BVA" id="7MFd5ixyTne" role="3LXTmr">
+              <ref role="398BVh" node="7hVsScEQJ6E" resolve="mbeddr.mpsutil" />
+              <node concept="2Ry0Ak" id="7MFd5ixyTnf" role="iGT6I">
+                <property role="2Ry0Am" value="solutions" />
+                <node concept="2Ry0Ak" id="7MFd5ixyTng" role="2Ry0An">
+                  <property role="2Ry0Am" value="test.com.mbeddr.mpsutil.collections.runtime" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
     </node>
     <node concept="2G$12M" id="4pIcGABAyzC" role="3989C9">
       <property role="TrG5h" value="com.mbeddr.doc.tests" />
diff --git a/code/languages/com.mbeddr.build/solutions/com.mbeddr.platform/models/com/mbeddr/platform/build.mps b/code/languages/com.mbeddr.build/solutions/com.mbeddr.platform/models/com/mbeddr/platform/build.mps
index e2ee7654303..c37d0cc78c8 100644
--- a/code/languages/com.mbeddr.build/solutions/com.mbeddr.platform/models/com/mbeddr/platform/build.mps
+++ b/code/languages/com.mbeddr.build/solutions/com.mbeddr.platform/models/com/mbeddr/platform/build.mps
@@ -19924,6 +19924,10 @@
         <ref role="m_rDy" node="2hNr1jFzOYG" resolve="com.mbeddr.mpsutil.checkinHandler" />
         <node concept="pUk6x" id="SUkpD3Rllc" role="pUk7w" />
       </node>
+      <node concept="m$_wl" id="13oTmDlqIT0" role="39821P">
+        <ref role="m_rDy" node="13oTmDlqFtC" resolve="com.mbeddr.mpsutil.collections" />
+        <node concept="pUk6x" id="13oTmDlqJhE" role="pUk7w" />
+      </node>
       <node concept="3_I8Xc" id="1vIw1eCEpcn" role="39821P">
         <ref role="3_I8Xa" node="4SMNYR2Zl4L" resolve="com.mbeddr.mpsutil.actionsfilter" />
       </node>
@@ -20345,6 +20349,288 @@
         </node>
       </node>
     </node>
+    <node concept="2G$12M" id="13oTmDlqAt1" role="3989C9">
+      <property role="TrG5h" value="com.mbeddr.mpsutil.collections" />
+      <node concept="1E1JtA" id="13oTmDlqAt2" role="2G$12L">
+        <property role="BnDLt" value="true" />
+        <property role="TrG5h" value="com.mbeddr.mpsutil.collections.runtime" />
+        <property role="3LESm3" value="3f2dbc2e-ad41-470f-b5f1-2869513d2b58" />
+        <node concept="398BVA" id="13oTmDlqAt3" role="3LF7KH">
+          <ref role="398BVh" node="7uZw0yZ2_Lj" resolve="mpsutil" />
+          <node concept="2Ry0Ak" id="13oTmDlqAt4" role="iGT6I">
+            <property role="2Ry0Am" value="solutions" />
+            <node concept="2Ry0Ak" id="13oTmDlqAt5" role="2Ry0An">
+              <property role="2Ry0Am" value="com.mbeddr.mpsutil.collections.runtime" />
+              <node concept="2Ry0Ak" id="13oTmDlqB2t" role="2Ry0An">
+                <property role="2Ry0Am" value="com.mbeddr.mpsutil.collections.runtime.msd" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="1SiIV0" id="13oTmDlqAt7" role="3bR37C">
+          <node concept="3bR9La" id="13oTmDlqAt8" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:1H905DlDUSw" resolve="MPS.OpenAPI" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="13oTmDlqAt9" role="3bR37C">
+          <node concept="3bR9La" id="13oTmDlqAta" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:mXGwHwhVPj" resolve="JDK" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="13oTmDlqAtf" role="3bR37C">
+          <node concept="3bR9La" id="13oTmDlqAtg" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:1TaHNgiIbIQ" resolve="MPS.Core" />
+          </node>
+        </node>
+        <node concept="1BupzO" id="13oTmDlqAth" role="3bR31x">
+          <property role="3ZfqAx" value="models" />
+          <property role="1Hdu6h" value="true" />
+          <property role="1HemKv" value="true" />
+          <node concept="3LXTmp" id="13oTmDlqBZG" role="1HemKq">
+            <node concept="398BVA" id="13oTmDlqBZx" role="3LXTmr">
+              <ref role="398BVh" node="7uZw0yZ2_Lj" resolve="mpsutil" />
+              <node concept="2Ry0Ak" id="13oTmDlqBZy" role="iGT6I">
+                <property role="2Ry0Am" value="solutions" />
+                <node concept="2Ry0Ak" id="13oTmDlqBZz" role="2Ry0An">
+                  <property role="2Ry0Am" value="com.mbeddr.mpsutil.collections.runtime" />
+                  <node concept="2Ry0Ak" id="13oTmDlqBZ$" role="2Ry0An">
+                    <property role="2Ry0Am" value="models" />
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="3qWCbU" id="13oTmDlqBZH" role="3LXTna">
+              <property role="3qWCbO" value="**/*.mps, **/*.mpsr, **/.model" />
+            </node>
+          </node>
+        </node>
+        <node concept="3rtmxn" id="13oTmDlqAtu" role="3bR31x">
+          <node concept="3LXTmp" id="13oTmDlqAtv" role="3rtmxm">
+            <node concept="3qWCbU" id="13oTmDlqAtw" role="3LXTna">
+              <property role="3qWCbO" value="icons/**, resources/**" />
+            </node>
+            <node concept="398BVA" id="13oTmDlqAtx" role="3LXTmr">
+              <ref role="398BVh" node="7uZw0yZ2_Lj" resolve="mpsutil" />
+              <node concept="2Ry0Ak" id="13oTmDlqAty" role="iGT6I">
+                <property role="2Ry0Am" value="solutions" />
+                <node concept="2Ry0Ak" id="13oTmDlqAtz" role="2Ry0An">
+                  <property role="2Ry0Am" value="com.mbeddr.mpsutil.checkinHandler" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="1SiIV0" id="13oTmDlqBZt" role="3bR37C">
+          <node concept="3bR9La" id="13oTmDlqBZu" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:1ia2VB5guYy" resolve="MPS.IDEA" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="13oTmDlqBZv" role="3bR37C">
+          <node concept="3bR9La" id="13oTmDlqBZw" role="1SiIV1">
+            <property role="3bR36h" value="true" />
+            <ref role="3bR37D" to="90a9:6fQhGuklQWU" resolve="de.q60.mps.collections.libs" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEr2hh" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEr2hi" role="1SiIV1">
+            <ref role="3bR37D" node="776vT$mQZbf" resolve="com.mbeddr.mpsutil.comparator" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEr2hj" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEr2hk" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6KYb" resolve="jetbrains.mps.baseLanguage" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEr2hl" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEr2hm" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6Lg8" resolve="jetbrains.mps.runtime" />
+          </node>
+        </node>
+      </node>
+      <node concept="1E1JtD" id="13oTmDlqC$D" role="2G$12L">
+        <property role="BnDLt" value="true" />
+        <property role="TrG5h" value="com.mbeddr.mpsutil.collections" />
+        <property role="3LESm3" value="e89e1550-b8fe-4f0d-a7fd-487968b42405" />
+        <node concept="398BVA" id="13oTmDlqCL0" role="3LF7KH">
+          <ref role="398BVh" node="7uZw0yZ2_Lj" resolve="mpsutil" />
+          <node concept="2Ry0Ak" id="13oTmDlqD9E" role="iGT6I">
+            <property role="2Ry0Am" value="languages" />
+            <node concept="2Ry0Ak" id="13oTmDlqDyj" role="2Ry0An">
+              <property role="2Ry0Am" value="com.mbeddr.mpsutil.collections" />
+              <node concept="2Ry0Ak" id="13oTmDlqDUW" role="2Ry0An">
+                <property role="2Ry0Am" value="com.mbeddr.mpsutil.collections.mpl" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="1BupzO" id="13oTmDlqESi" role="3bR31x">
+          <property role="3ZfqAx" value="models" />
+          <property role="1Hdu6h" value="true" />
+          <property role="1HemKv" value="true" />
+          <node concept="3LXTmp" id="13oTmDlqESj" role="1HemKq">
+            <node concept="398BVA" id="13oTmDlqES7" role="3LXTmr">
+              <ref role="398BVh" node="7uZw0yZ2_Lj" resolve="mpsutil" />
+              <node concept="2Ry0Ak" id="13oTmDlqES8" role="iGT6I">
+                <property role="2Ry0Am" value="languages" />
+                <node concept="2Ry0Ak" id="13oTmDlqES9" role="2Ry0An">
+                  <property role="2Ry0Am" value="com.mbeddr.mpsutil.collections" />
+                  <node concept="2Ry0Ak" id="13oTmDlqESa" role="2Ry0An">
+                    <property role="2Ry0Am" value="models" />
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="3qWCbU" id="13oTmDlqESk" role="3LXTna">
+              <property role="3qWCbO" value="**/*.mps, **/*.mpsr, **/.model" />
+            </node>
+          </node>
+        </node>
+        <node concept="1E0d5M" id="13oTmDlqESl" role="1E1XAP">
+          <ref role="1E0d5P" node="13oTmDlqAt2" resolve="com.mbeddr.mpsutil.collections.runtime" />
+        </node>
+        <node concept="1yeLz9" id="13oTmDlqESm" role="1TViLv">
+          <property role="TrG5h" value="com.mbeddr.mpsutil.collections.generator" />
+          <property role="3LESm3" value="9226b771-fcee-4dfc-a461-81a859795d14" />
+          <node concept="1BupzO" id="13oTmDlqES$" role="3bR31x">
+            <property role="3ZfqAx" value="generator/templates" />
+            <property role="1Hdu6h" value="true" />
+            <property role="1HemKv" value="true" />
+            <node concept="3LXTmp" id="13oTmDlqES_" role="1HemKq">
+              <node concept="398BVA" id="13oTmDlqESn" role="3LXTmr">
+                <ref role="398BVh" node="7uZw0yZ2_Lj" resolve="mpsutil" />
+                <node concept="2Ry0Ak" id="13oTmDlqESo" role="iGT6I">
+                  <property role="2Ry0Am" value="languages" />
+                  <node concept="2Ry0Ak" id="13oTmDlqESp" role="2Ry0An">
+                    <property role="2Ry0Am" value="com.mbeddr.mpsutil.collections" />
+                    <node concept="2Ry0Ak" id="13oTmDlqESq" role="2Ry0An">
+                      <property role="2Ry0Am" value="generator" />
+                      <node concept="2Ry0Ak" id="13oTmDlqESr" role="2Ry0An">
+                        <property role="2Ry0Am" value="templates" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+              <node concept="3qWCbU" id="13oTmDlqESA" role="3LXTna">
+                <property role="3qWCbO" value="**/*.mps, **/*.mpsr, **/.model" />
+              </node>
+            </node>
+          </node>
+          <node concept="1SiIV0" id="4JmsWjEr2hZ" role="3bR37C">
+            <node concept="3bR9La" id="4JmsWjEr2i0" role="1SiIV1">
+              <ref role="3bR37D" to="ffeo:1H905DlDUSw" resolve="MPS.OpenAPI" />
+            </node>
+          </node>
+          <node concept="1SiIV0" id="4JmsWjEr2i1" role="3bR37C">
+            <node concept="3bR9La" id="4JmsWjEr2i2" role="1SiIV1">
+              <ref role="3bR37D" to="ffeo:mXGwHwhVPj" resolve="JDK" />
+            </node>
+          </node>
+          <node concept="1SiIV0" id="4JmsWjEr2i3" role="3bR37C">
+            <node concept="3bR9La" id="4JmsWjEr2i4" role="1SiIV1">
+              <ref role="3bR37D" to="ffeo:7Kfy9QB6KYb" resolve="jetbrains.mps.baseLanguage" />
+            </node>
+          </node>
+        </node>
+        <node concept="3rtmxn" id="13oTmDlqF4U" role="3bR31x">
+          <node concept="3LXTmp" id="13oTmDlqF4V" role="3rtmxm">
+            <node concept="398BVA" id="13oTmDlqF4W" role="3LXTmr">
+              <ref role="398BVh" node="7uZw0yZ2_Lj" resolve="mpsutil" />
+              <node concept="2Ry0Ak" id="13oTmDlqF4X" role="iGT6I">
+                <property role="2Ry0Am" value="languages" />
+                <node concept="2Ry0Ak" id="13oTmDlqF4Y" role="2Ry0An">
+                  <property role="2Ry0Am" value="com.mbeddr.mpsutil.collections" />
+                </node>
+              </node>
+            </node>
+            <node concept="3qWCbU" id="13oTmDlqF50" role="3LXTna">
+              <property role="3qWCbO" value="icons/**, resources/**" />
+            </node>
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEr2hy" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEr2hz" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:1H905DlDUSw" resolve="MPS.OpenAPI" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEr2h$" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEr2h_" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:mXGwHwhVPj" resolve="JDK" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEr2hA" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEr2hB" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6KXW" resolve="jetbrains.mps.lang.core" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEr2hC" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEr2hD" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6KYb" resolve="jetbrains.mps.baseLanguage" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEr2hE" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEr2hF" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6L9O" resolve="jetbrains.mps.lang.smodel" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEr2hG" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEr2hH" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:1TaHNgiIbIQ" resolve="MPS.Core" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEr2hI" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEr2hJ" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6L0h" resolve="jetbrains.mps.baseLanguage.collections" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEr2hK" role="3bR37C">
+          <node concept="3bR9La" id="4JmsWjEr2hL" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6LaO" resolve="jetbrains.mps.lang.structure" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="4JmsWjEr2hX" role="3bR37C">
+          <node concept="1Busua" id="4JmsWjEr2hY" role="1SiIV1">
+            <ref role="1Busuk" to="ffeo:7Kfy9QB6KYb" resolve="jetbrains.mps.baseLanguage" />
+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="m$_wf" id="13oTmDlqFtC" role="3989C9">
+      <property role="m$_wk" value="com.mbeddr.mpsutil.collections" />
+      <node concept="3_J27D" id="13oTmDlqFtE" role="m$_yQ">
+        <node concept="3Mxwew" id="13oTmDlqFtF" role="3MwsjC">
+          <property role="3MwjfP" value="com.mbeddr.mpsutil.collections" />
+        </node>
+      </node>
+      <node concept="3_J27D" id="13oTmDlqFtG" role="m_cZH">
+        <node concept="3Mxwew" id="13oTmDlqFtH" role="3MwsjC">
+          <property role="3MwjfP" value="com.mbeddr.mpsutil.collection" />
+        </node>
+      </node>
+      <node concept="3_J27D" id="13oTmDlqFtI" role="m$_w8">
+        <node concept="3Mxwew" id="13oTmDlqFtJ" role="3MwsjC">
+          <property role="3MwjfP" value="mbeddr" />
+        </node>
+      </node>
+      <node concept="2iUeEo" id="13oTmDlqFtK" role="2iVFfd">
+        <property role="2iUeEt" value="mbeddr" />
+        <property role="2iUeEu" value="http://mbeddr.com" />
+      </node>
+      <node concept="m$f5U" id="13oTmDlqFtL" role="m$_yh">
+        <ref role="m$f5T" node="13oTmDlqAt1" resolve="com.mbeddr.mpsutil.collections" />
+      </node>
+      <node concept="3_J27D" id="13oTmDlqGrh" role="3s6cr7">
+        <node concept="3Mxwew" id="13oTmDlqGri" role="3MwsjC">
+          <property role="3MwjfP" value="extensions for the MPS collections language" />
+        </node>
+      </node>
+      <node concept="m$_yC" id="13oTmDlqH0c" role="m$_yJ">
+        <ref role="m$_y1" to="90a9:2OJNL7ElZsF" resolve="de.q60.mps.collections.libs" />
+      </node>
+      <node concept="m$_yC" id="4JmsWjEr2u_" role="m$_yJ">
+        <ref role="m$_y1" node="DnqfiuSO_Q" resolve="com.mbeddr.mpsutil.compare" />
+      </node>
+    </node>
     <node concept="m$_wf" id="2hNr1jFzOYG" role="3989C9">
       <property role="m$_wk" value="com.mbeddr.mpsutil.checkinHandler" />
       <node concept="m$_yC" id="2hNr1jFzOYH" role="m$_yJ">
diff --git a/code/languages/com.mbeddr.mpsutil/.mps/modules.xml b/code/languages/com.mbeddr.mpsutil/.mps/modules.xml
index 33ed59ba987..f623dca2282 100644
--- a/code/languages/com.mbeddr.mpsutil/.mps/modules.xml
+++ b/code/languages/com.mbeddr.mpsutil/.mps/modules.xml
@@ -15,6 +15,7 @@
       <modulePath path="$PROJECT_DIR$/languages/com.mbeddr.mpsutil.ccmenu/com.mbeddr.mpsutil.ccmenu.mpl" folder="rest.ccmenu" />
       <modulePath path="$PROJECT_DIR$/languages/com.mbeddr.mpsutil.checkinHandler.demo/com.mbeddr.mpsutil.checkinHandler.demo.mpl" folder="" />
       <modulePath path="$PROJECT_DIR$/languages/com.mbeddr.mpsutil.checkinHandler/com.mbeddr.mpsutil.checkinHandler.mpl" folder="" />
+      <modulePath path="$PROJECT_DIR$/languages/com.mbeddr.mpsutil.collections/com.mbeddr.mpsutil.collections.mpl" folder="collections" />
       <modulePath path="$PROJECT_DIR$/languages/com.mbeddr.mpsutil.compare.pattern.baselang/com.mbeddr.mpsutil.compare.pattern.baselang.mpl" folder="staging.comparator" />
       <modulePath path="$PROJECT_DIR$/languages/com.mbeddr.mpsutil.compare.pattern.generator/com.mbeddr.mpsutil.compare.pattern.generator.mpl" folder="staging.comparator" />
       <modulePath path="$PROJECT_DIR$/languages/com.mbeddr.mpsutil.compare.pattern/com.mbeddr.mpsutil.compare.pattern.mpl" folder="staging.comparator" />
@@ -112,6 +113,7 @@
       <modulePath path="$PROJECT_DIR$/solutions/com.mbeddr.mpsutil.ccmenu.sandbox/com.mbeddr.mpsutil.ccmenu.sandbox.msd" folder="rest.ccmenu" />
       <modulePath path="$PROJECT_DIR$/solutions/com.mbeddr.mpsutil.checkinHandler.demo.plugin/com.mbeddr.mpsutil.checkinHandler.demo.plugin.msd" folder="checkinHandler" />
       <modulePath path="$PROJECT_DIR$/solutions/com.mbeddr.mpsutil.checkinHandler/com.mbeddr.mpsutil.checkinHandler.msd" folder="checkinHandler" />
+      <modulePath path="$PROJECT_DIR$/solutions/com.mbeddr.mpsutil.collections.runtime/com.mbeddr.mpsutil.collections.runtime.msd" folder="collections" />
       <modulePath path="$PROJECT_DIR$/solutions/com.mbeddr.mpsutil.common/com.mbeddr.mpsutil.common.msd" folder="staging.common" />
       <modulePath path="$PROJECT_DIR$/solutions/com.mbeddr.mpsutil.comparator.diff.demo.genplan/com.mbeddr.mpsutil.comparator.diff.demo.genplan.msd" folder="staging.comparator.demo" />
       <modulePath path="$PROJECT_DIR$/solutions/com.mbeddr.mpsutil.comparator.diff.demo.tests/com.mbeddr.mpsutil.comparator.diff.demo.tests.msd" folder="staging.comparator.demo" />
@@ -186,6 +188,7 @@
       <modulePath path="$PROJECT_DIR$/solutions/org.apache.batik/org.apache.batik.msd" folder="" />
       <modulePath path="$PROJECT_DIR$/solutions/org.mockito/org.mockito.msd" folder="stubs" />
       <modulePath path="$PROJECT_DIR$/solutions/org.xml/org.xml.msd" folder="" />
+      <modulePath path="$PROJECT_DIR$/solutions/test.com.mbeddr.mpsutil.collections.runtime/test.com.mbeddr.mpsutil.collections.runtime.msd" folder="collections" />
       <modulePath path="$PROJECT_DIR$/solutions/test.com.mbeddr.mpsutil.logicalChild/test.com.mbeddr.mpsutil.logicalChild.msd" folder="logicalChild" />
       <modulePath path="$PROJECT_DIR$/tests/com.mbeddr.mpsutil.compare.pattern.test/com.mbeddr.mpsutil.compare.pattern.test.msd" folder="staging.comparator" />
       <modulePath path="$PROJECT_DIR$/tests/com.mbeddr.mpsutil.javainterpreter.test/com.mbeddr.mpsutil.javainterpreter.test.mpl" folder="staging.javainterpreter" />
diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/com.mbeddr.mpsutil.collections.mpl b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/com.mbeddr.mpsutil.collections.mpl
new file mode 100644
index 00000000000..aee2b3a12ad
--- /dev/null
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/com.mbeddr.mpsutil.collections.mpl
@@ -0,0 +1,160 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<language namespace="com.mbeddr.mpsutil.collections" uuid="e89e1550-b8fe-4f0d-a7fd-487968b42405" languageVersion="0" moduleVersion="0">
+  <models>
+    <modelRoot type="default" contentPath="${module}">
+      <sourceRoot location="models" />
+    </modelRoot>
+  </models>
+  <facets>
+    <facet compile="mps" classes="mps" ext="yes" type="java">
+      <classes generated="true" path="${module}/classes_gen" />
+    </facet>
+  </facets>
+  <accessoryModels />
+  <generators>
+    <generator alias="main" namespace="com.mbeddr.mpsutil.collections.generator" uuid="9226b771-fcee-4dfc-a461-81a859795d14">
+      <models>
+        <modelRoot type="default" contentPath="${module}/generator">
+          <sourceRoot location="templates" />
+        </modelRoot>
+      </models>
+      <facets>
+        <facet compile="mps" classes="mps" ext="no" type="java">
+          <classes generated="true" path="${module}/generator/classes_gen" />
+        </facet>
+      </facets>
+      <external-templates />
+      <dependencies>
+        <dependency reexport="false">6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)</dependency>
+        <dependency reexport="false">8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)</dependency>
+        <dependency reexport="false" scope="design">2bdcefec-ba49-4b32-ab50-ebc7a41d5090(jetbrains.mps.lang.smodel#1139186730696)</dependency>
+        <dependency reexport="false">f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)</dependency>
+      </dependencies>
+      <languageVersions>
+        <language slang="l:f3061a53-9226-4cc5-a443-f952ceaf5816:jetbrains.mps.baseLanguage" version="12" />
+        <language slang="l:fd392034-7849-419d-9071-12563d152375:jetbrains.mps.baseLanguage.closures" version="0" />
+        <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="1" />
+        <language slang="l:f2801650-65d5-424e-bb1b-463a8781b786:jetbrains.mps.baseLanguage.javadoc" version="2" />
+        <language slang="l:760a0a8c-eabb-4521-8bfd-65db761a9ba3:jetbrains.mps.baseLanguage.logging" version="0" />
+        <language slang="l:a247e09e-2435-45ba-b8d2-07e93feba96a:jetbrains.mps.baseLanguage.tuples" version="0" />
+        <language slang="l:ceab5195-25ea-4f22-9b92-103b95ca8c0c:jetbrains.mps.lang.core" version="2" />
+        <language slang="l:b401a680-8325-4110-8fd3-84331ff25bef:jetbrains.mps.lang.generator" version="4" />
+        <language slang="l:d7706f63-9be2-479c-a3da-ae92af1e64d5:jetbrains.mps.lang.generator.generationContext" version="2" />
+        <language slang="l:289fcc83-6543-41e8-a5ca-768235715ce4:jetbrains.mps.lang.generator.generationParameters" version="0" />
+        <language slang="l:446c26eb-2b7b-4bf0-9b35-f83fa582753e:jetbrains.mps.lang.modelapi" version="0" />
+        <language slang="l:3a13115c-633c-4c5c-bbcc-75c4219e9555:jetbrains.mps.lang.quotation" version="5" />
+        <language slang="l:13744753-c81f-424a-9c1b-cf8943bf4e86:jetbrains.mps.lang.sharedConcepts" version="0" />
+        <language slang="l:7866978e-a0f0-4cc7-81bc-4d213d9375e1:jetbrains.mps.lang.smodel" version="19" />
+        <language slang="l:c7fb639f-be78-4307-89b0-b5959c3fa8c8:jetbrains.mps.lang.text" version="0" />
+        <language slang="l:9ded098b-ad6a-4657-bfd9-48636cfe8bc3:jetbrains.mps.lang.traceable" version="0" />
+      </languageVersions>
+      <dependencyVersions>
+        <module reference="3f233e7f-b8a6-46d2-a57f-795d56775243(Annotations)" version="0" />
+        <module reference="6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)" version="0" />
+        <module reference="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea(MPS.Core)" version="0" />
+        <module reference="8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)" version="0" />
+        <module reference="e89e1550-b8fe-4f0d-a7fd-487968b42405(com.mbeddr.mpsutil.collections)" version="0" />
+        <module reference="9226b771-fcee-4dfc-a461-81a859795d14(com.mbeddr.mpsutil.collections.generator)" version="0" />
+        <module reference="3f2dbc2e-ad41-470f-b5f1-2869513d2b58(com.mbeddr.mpsutil.collections.runtime)" version="0" />
+        <module reference="ecfb9949-7433-4db5-85de-0f84d172e4ce(de.q60.mps.collections.libs)" version="0" />
+        <module reference="f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)" version="0" />
+        <module reference="e39e4a59-8cb6-498e-860e-8fa8361c0d90(jetbrains.mps.baseLanguage.scopes)" version="0" />
+        <module reference="2d3c70e9-aab2-4870-8d8d-6036800e4103(jetbrains.mps.kernel)" version="0" />
+        <module reference="ceab5195-25ea-4f22-9b92-103b95ca8c0c(jetbrains.mps.lang.core)" version="0" />
+        <module reference="2bdcefec-ba49-4b32-ab50-ebc7a41d5090(jetbrains.mps.lang.smodel#1139186730696)" version="0" />
+        <module reference="9ded098b-ad6a-4657-bfd9-48636cfe8bc3(jetbrains.mps.lang.traceable)" version="0" />
+      </dependencyVersions>
+      <mapping-priorities>
+        <mapping-priority-rule kind="strictly_together">
+          <greater-priority-mapping>
+            <generator generatorUID="9226b771-fcee-4dfc-a461-81a859795d14(com.mbeddr.mpsutil.collections.generator)" />
+            <external-mapping>
+              <mapping-node modelUID="r:fe83d388-8fd7-46fd-b1ae-3b9bf9de62b8(com.mbeddr.mpsutil.collections.generator.templates@generator)" nodeID="942304653331834795" />
+            </external-mapping>
+          </greater-priority-mapping>
+          <lesser-priority-mapping>
+            <generator generatorUID="2bdcefec-ba49-4b32-ab50-ebc7a41d5090(jetbrains.mps.lang.smodel#1139186730696)" />
+            <external-mapping>
+              <mapping-node modelUID="r:00000000-0000-4000-0000-011c89590303(jetbrains.mps.lang.smodel.generator.baseLanguage.template.main@generator)" nodeID="1139186732963" />
+            </external-mapping>
+          </lesser-priority-mapping>
+        </mapping-priority-rule>
+      </mapping-priorities>
+    </generator>
+  </generators>
+  <sourcePath />
+  <dependencies>
+    <dependency reexport="false">c72da2b9-7cce-4447-8389-f407dc1158b7(jetbrains.mps.lang.structure)</dependency>
+    <dependency reexport="false">f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)</dependency>
+    <dependency reexport="false">ceab5195-25ea-4f22-9b92-103b95ca8c0c(jetbrains.mps.lang.core)</dependency>
+    <dependency reexport="false">6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)</dependency>
+    <dependency reexport="false">8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)</dependency>
+    <dependency reexport="false">6ed54515-acc8-4d1e-a16c-9fd6cfe951ea(MPS.Core)</dependency>
+    <dependency reexport="false">83888646-71ce-4f1c-9c53-c54016f6ad4f(jetbrains.mps.baseLanguage.collections)</dependency>
+    <dependency reexport="false">7866978e-a0f0-4cc7-81bc-4d213d9375e1(jetbrains.mps.lang.smodel)</dependency>
+  </dependencies>
+  <languageVersions>
+    <language slang="l:e89e1550-b8fe-4f0d-a7fd-487968b42405:com.mbeddr.mpsutil.collections" version="0" />
+    <language slang="l:9d69e719-78c8-4286-90db-fb19c107d049:com.mbeddr.mpsutil.grammarcells" version="2" />
+    <language slang="l:b4f35ed8-45af-4efa-abe4-00ac26956e69:com.mbeddr.mpsutil.grammarcells.runtimelang" version="0" />
+    <language slang="l:f3061a53-9226-4cc5-a443-f952ceaf5816:jetbrains.mps.baseLanguage" version="12" />
+    <language slang="l:443f4c36-fcf5-4eb6-9500-8d06ed259e3e:jetbrains.mps.baseLanguage.classifiers" version="0" />
+    <language slang="l:fd392034-7849-419d-9071-12563d152375:jetbrains.mps.baseLanguage.closures" version="0" />
+    <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="1" />
+    <language slang="l:f2801650-65d5-424e-bb1b-463a8781b786:jetbrains.mps.baseLanguage.javadoc" version="2" />
+    <language slang="l:760a0a8c-eabb-4521-8bfd-65db761a9ba3:jetbrains.mps.baseLanguage.logging" version="0" />
+    <language slang="l:a247e09e-2435-45ba-b8d2-07e93feba96a:jetbrains.mps.baseLanguage.tuples" version="0" />
+    <language slang="l:aee9cad2-acd4-4608-aef2-0004f6a1cdbd:jetbrains.mps.lang.actions" version="4" />
+    <language slang="l:af65afd8-f0dd-4942-87d9-63a55f2a9db1:jetbrains.mps.lang.behavior" version="2" />
+    <language slang="l:3f4bc5f5-c6c1-4a28-8b10-c83066ffa4a1:jetbrains.mps.lang.constraints" version="6" />
+    <language slang="l:e51810c5-7308-4642-bcb6-469e61b5dd18:jetbrains.mps.lang.constraints.msg.specification" version="0" />
+    <language slang="l:47257bf3-78d3-470b-89d9-8c3261a61d15:jetbrains.mps.lang.constraints.rules" version="0" />
+    <language slang="l:5dae8159-ab99-46bb-a40d-0cee30ee7018:jetbrains.mps.lang.constraints.rules.kinds" version="0" />
+    <language slang="l:134c38d4-e3af-4d9e-b069-1c7df0a4005d:jetbrains.mps.lang.constraints.rules.skeleton" version="0" />
+    <language slang="l:3ad5badc-1d9c-461c-b7b1-fa2fcd0a0ae7:jetbrains.mps.lang.context" version="0" />
+    <language slang="l:ea3159bf-f48e-4720-bde2-86dba75f0d34:jetbrains.mps.lang.context.defs" version="0" />
+    <language slang="l:ceab5195-25ea-4f22-9b92-103b95ca8c0c:jetbrains.mps.lang.core" version="2" />
+    <language slang="l:f4ad079d-bc71-4ffb-9600-9328705cf998:jetbrains.mps.lang.descriptor" version="0" />
+    <language slang="l:18bc6592-03a6-4e29-a83a-7ff23bde13ba:jetbrains.mps.lang.editor" version="14" />
+    <language slang="l:ad93155d-79b2-4759-b10c-55123e763903:jetbrains.mps.lang.messages" version="0" />
+    <language slang="l:446c26eb-2b7b-4bf0-9b35-f83fa582753e:jetbrains.mps.lang.modelapi" version="0" />
+    <language slang="l:d4615e3b-d671-4ba9-af01-2b78369b0ba7:jetbrains.mps.lang.pattern" version="2" />
+    <language slang="l:3a13115c-633c-4c5c-bbcc-75c4219e9555:jetbrains.mps.lang.quotation" version="5" />
+    <language slang="l:982eb8df-2c96-4bd7-9963-11712ea622e5:jetbrains.mps.lang.resources" version="2" />
+    <language slang="l:b3551702-269c-4f05-ba61-58060cef4292:jetbrains.mps.lang.rulesAndMessages" version="0" />
+    <language slang="l:d8f591ec-4d86-4af2-9f92-a9e93c803ffa:jetbrains.mps.lang.scopes" version="0" />
+    <language slang="l:13744753-c81f-424a-9c1b-cf8943bf4e86:jetbrains.mps.lang.sharedConcepts" version="0" />
+    <language slang="l:7866978e-a0f0-4cc7-81bc-4d213d9375e1:jetbrains.mps.lang.smodel" version="19" />
+    <language slang="l:c72da2b9-7cce-4447-8389-f407dc1158b7:jetbrains.mps.lang.structure" version="9" />
+    <language slang="l:c7fb639f-be78-4307-89b0-b5959c3fa8c8:jetbrains.mps.lang.text" version="0" />
+    <language slang="l:9ded098b-ad6a-4657-bfd9-48636cfe8bc3:jetbrains.mps.lang.traceable" version="0" />
+    <language slang="l:7a5dda62-9140-4668-ab76-d5ed1746f2b2:jetbrains.mps.lang.typesystem" version="5" />
+  </languageVersions>
+  <dependencyVersions>
+    <module reference="3f233e7f-b8a6-46d2-a57f-795d56775243(Annotations)" version="0" />
+    <module reference="6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)" version="0" />
+    <module reference="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea(MPS.Core)" version="0" />
+    <module reference="8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)" version="0" />
+    <module reference="e89e1550-b8fe-4f0d-a7fd-487968b42405(com.mbeddr.mpsutil.collections)" version="0" />
+    <module reference="f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)" version="0" />
+    <module reference="fd392034-7849-419d-9071-12563d152375(jetbrains.mps.baseLanguage.closures)" version="0" />
+    <module reference="83888646-71ce-4f1c-9c53-c54016f6ad4f(jetbrains.mps.baseLanguage.collections)" version="0" />
+    <module reference="e39e4a59-8cb6-498e-860e-8fa8361c0d90(jetbrains.mps.baseLanguage.scopes)" version="0" />
+    <module reference="2d3c70e9-aab2-4870-8d8d-6036800e4103(jetbrains.mps.kernel)" version="0" />
+    <module reference="d936855b-48da-4812-a8a0-2bfddd633ac5(jetbrains.mps.lang.behavior.api)" version="0" />
+    <module reference="ceab5195-25ea-4f22-9b92-103b95ca8c0c(jetbrains.mps.lang.core)" version="0" />
+    <module reference="a9e4c532-c5f5-4bb7-99ef-42abb73bbb70(jetbrains.mps.lang.descriptor.aspects)" version="0" />
+    <module reference="446c26eb-2b7b-4bf0-9b35-f83fa582753e(jetbrains.mps.lang.modelapi)" version="0" />
+    <module reference="d7eb0a2a-bd50-4576-beae-e4a89db35f20(jetbrains.mps.lang.scopes.runtime)" version="0" />
+    <module reference="7866978e-a0f0-4cc7-81bc-4d213d9375e1(jetbrains.mps.lang.smodel)" version="1" />
+    <module reference="c72da2b9-7cce-4447-8389-f407dc1158b7(jetbrains.mps.lang.structure)" version="0" />
+    <module reference="9ded098b-ad6a-4657-bfd9-48636cfe8bc3(jetbrains.mps.lang.traceable)" version="0" />
+  </dependencyVersions>
+  <runtime>
+    <dependency reexport="false">3f2dbc2e-ad41-470f-b5f1-2869513d2b58(com.mbeddr.mpsutil.collections.runtime)</dependency>
+  </runtime>
+  <extendedLanguages>
+    <extendedLanguage>f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)</extendedLanguage>
+  </extendedLanguages>
+</language>
+
diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/generator/templates/com.mbeddr.mpsutil.collections.generator.templates@generator.mps b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/generator/templates/com.mbeddr.mpsutil.collections.generator.templates@generator.mps
new file mode 100644
index 00000000000..da5c9c9735d
--- /dev/null
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/generator/templates/com.mbeddr.mpsutil.collections.generator.templates@generator.mps
@@ -0,0 +1,209 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:fe83d388-8fd7-46fd-b1ae-3b9bf9de62b8(com.mbeddr.mpsutil.collections.generator.templates@generator)">
+  <persistence version="9" />
+  <languages>
+    <use id="b401a680-8325-4110-8fd3-84331ff25bef" name="jetbrains.mps.lang.generator" version="4" />
+    <devkit ref="a2eb3a43-fcc2-4200-80dc-c60110c4862d(jetbrains.mps.devkit.templates)" />
+  </languages>
+  <imports>
+    <import index="i2rk" ref="r:baa9d6ac-6b79-40af-928c-6bdcbfd7265f(com.mbeddr.mpsutil.collections.structure)" />
+    <import index="33ny" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.util(JDK/)" />
+    <import index="mhbf" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.model(MPS.OpenAPI/)" />
+    <import index="tpee" ref="r:00000000-0000-4000-0000-011c895902ca(jetbrains.mps.baseLanguage.structure)" />
+    <import index="co" ref="r:240d60dc-7568-46d8-a080-a0889db7fd44(com.mbeddr.mpsutil.collections.runtime)" />
+  </imports>
+  <registry>
+    <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
+      <concept id="1197027756228" name="jetbrains.mps.baseLanguage.structure.DotExpression" flags="nn" index="2OqwBi">
+        <child id="1197027771414" name="operand" index="2Oq$k0" />
+        <child id="1197027833540" name="operation" index="2OqNvi" />
+      </concept>
+      <concept id="1145552977093" name="jetbrains.mps.baseLanguage.structure.GenericNewExpression" flags="nn" index="2ShNRf">
+        <child id="1145553007750" name="creator" index="2ShVmc" />
+      </concept>
+      <concept id="1137021947720" name="jetbrains.mps.baseLanguage.structure.ConceptFunction" flags="in" index="2VMwT0">
+        <child id="1137022507850" name="body" index="2VODD2" />
+      </concept>
+      <concept id="1070534058343" name="jetbrains.mps.baseLanguage.structure.NullLiteral" flags="nn" index="10Nm6u" />
+      <concept id="1513279640923991009" name="jetbrains.mps.baseLanguage.structure.IGenericClassCreator" flags="ng" index="366HgL">
+        <property id="1513279640906337053" name="inferTypeParams" index="373rjd" />
+      </concept>
+      <concept id="1068580123155" name="jetbrains.mps.baseLanguage.structure.ExpressionStatement" flags="nn" index="3clFbF">
+        <child id="1068580123156" name="expression" index="3clFbG" />
+      </concept>
+      <concept id="1068580123136" name="jetbrains.mps.baseLanguage.structure.StatementList" flags="sn" stub="5293379017992965193" index="3clFbS">
+        <child id="1068581517665" name="statement" index="3cqZAp" />
+      </concept>
+      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
+        <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
+        <child id="1068499141038" name="actualArgument" index="37wK5m" />
+      </concept>
+      <concept id="1212685548494" name="jetbrains.mps.baseLanguage.structure.ClassCreator" flags="nn" index="1pGfFk" />
+      <concept id="1107535904670" name="jetbrains.mps.baseLanguage.structure.ClassifierType" flags="in" index="3uibUv">
+        <reference id="1107535924139" name="classifier" index="3uigEE" />
+        <child id="1109201940907" name="parameter" index="11_B2D" />
+      </concept>
+    </language>
+    <language id="b401a680-8325-4110-8fd3-84331ff25bef" name="jetbrains.mps.lang.generator">
+      <concept id="1114706874351" name="jetbrains.mps.lang.generator.structure.CopySrcNodeMacro" flags="ln" index="29HgVG">
+        <child id="1168024447342" name="sourceNodeQuery" index="3NFExx" />
+      </concept>
+      <concept id="1095416546421" name="jetbrains.mps.lang.generator.structure.MappingConfiguration" flags="ig" index="bUwia">
+        <child id="1167328349397" name="reductionMappingRule" index="3acgRq" />
+      </concept>
+      <concept id="1177093525992" name="jetbrains.mps.lang.generator.structure.InlineTemplate_RuleConsequence" flags="lg" index="gft3U">
+        <child id="1177093586806" name="templateNode" index="gfFT$" />
+      </concept>
+      <concept id="1167168920554" name="jetbrains.mps.lang.generator.structure.BaseMappingRule_Condition" flags="in" index="30G5F_" />
+      <concept id="1167169188348" name="jetbrains.mps.lang.generator.structure.TemplateFunctionParameter_sourceNode" flags="nn" index="30H73N" />
+      <concept id="1167169308231" name="jetbrains.mps.lang.generator.structure.BaseMappingRule" flags="ng" index="30H$t8">
+        <reference id="1167169349424" name="applicableConcept" index="30HIoZ" />
+        <child id="1167169362365" name="conditionFunction" index="30HLyM" />
+      </concept>
+      <concept id="1167327847730" name="jetbrains.mps.lang.generator.structure.Reduction_MappingRule" flags="lg" index="3aamgX">
+        <child id="1169672767469" name="ruleConsequence" index="1lVwrX" />
+      </concept>
+      <concept id="1167945743726" name="jetbrains.mps.lang.generator.structure.IfMacro_Condition" flags="in" index="3IZrLx" />
+      <concept id="1168024337012" name="jetbrains.mps.lang.generator.structure.SourceSubstituteMacro_SourceNodeQuery" flags="in" index="3NFfHV" />
+      <concept id="1118773211870" name="jetbrains.mps.lang.generator.structure.IfMacro" flags="ln" index="1W57fq">
+        <child id="1194989344771" name="alternativeConsequence" index="UU_$l" />
+        <child id="1167945861827" name="conditionFunction" index="3IZSJc" />
+      </concept>
+    </language>
+    <language id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel">
+      <concept id="1177026924588" name="jetbrains.mps.lang.smodel.structure.RefConcept_Reference" flags="nn" index="chp4Y">
+        <reference id="1177026940964" name="conceptDeclaration" index="cht4Q" />
+      </concept>
+      <concept id="2396822768958367367" name="jetbrains.mps.lang.smodel.structure.AbstractTypeCastExpression" flags="nn" index="$5XWr">
+        <child id="6733348108486823193" name="leftExpression" index="1m5AlR" />
+        <child id="3906496115198199033" name="conceptArgument" index="3oSUPX" />
+      </concept>
+      <concept id="1139621453865" name="jetbrains.mps.lang.smodel.structure.Node_IsInstanceOfOperation" flags="nn" index="1mIQ4w">
+        <child id="1177027386292" name="conceptArgument" index="cj9EA" />
+      </concept>
+      <concept id="1172008320231" name="jetbrains.mps.lang.smodel.structure.Node_IsNotNullOperation" flags="nn" index="3x8VRR" />
+      <concept id="1140137987495" name="jetbrains.mps.lang.smodel.structure.SNodeTypeCastExpression" flags="nn" index="1PxgMI">
+        <property id="1238684351431" name="asCast" index="1BlNFB" />
+      </concept>
+      <concept id="1138056143562" name="jetbrains.mps.lang.smodel.structure.SLinkAccess" flags="nn" index="3TrEf2">
+        <reference id="1138056516764" name="link" index="3Tt5mk" />
+      </concept>
+    </language>
+    <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" name="jetbrains.mps.lang.core">
+      <concept id="1133920641626" name="jetbrains.mps.lang.core.structure.BaseConcept" flags="ng" index="2VYdi">
+        <child id="5169995583184591170" name="smodelAttribute" index="lGtFl" />
+      </concept>
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+        <property id="1169194664001" name="name" index="TrG5h" />
+      </concept>
+    </language>
+  </registry>
+  <node concept="bUwia" id="OjJhrO2EuF">
+    <property role="TrG5h" value="main" />
+    <node concept="3aamgX" id="h0CysJp" role="3acgRq">
+      <ref role="30HIoZ" to="i2rk:5wNjLS4fqEi" resolve="SNodeSetType" />
+      <node concept="gft3U" id="h8hxs_p" role="1lVwrX">
+        <node concept="3uibUv" id="h8hxuxe" role="gfFT$">
+          <ref role="3uigEE" to="33ny:~Set" resolve="Set" />
+          <node concept="3uibUv" id="h8hxw4o" role="11_B2D">
+            <ref role="3uigEE" to="mhbf:~SNode" resolve="SNode" />
+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="3aamgX" id="h0CyBP8" role="3acgRq">
+      <ref role="30HIoZ" to="tpee:gEShNN5" resolve="GenericNewExpression" />
+      <node concept="30G5F_" id="h0CyCFm" role="30HLyM">
+        <node concept="3clFbS" id="h0CyCFn" role="2VODD2">
+          <node concept="3clFbF" id="hbzt5Wo" role="3cqZAp">
+            <node concept="2OqwBi" id="hxx$NBK" role="3clFbG">
+              <node concept="2OqwBi" id="hxx$Nga" role="2Oq$k0">
+                <node concept="30H73N" id="h0CyDXF" role="2Oq$k0" />
+                <node concept="3TrEf2" id="h4IuMGW" role="2OqNvi">
+                  <ref role="3Tt5mk" to="tpee:gEShVi6" resolve="creator" />
+                </node>
+              </node>
+              <node concept="1mIQ4w" id="h0CyGzx" role="2OqNvi">
+                <node concept="chp4Y" id="h8hlVn6" role="cj9EA">
+                  <ref role="cht4Q" to="i2rk:4JmsWjDRcxX" resolve="SNodeSetCreator" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="gft3U" id="h8hy5wQ" role="1lVwrX">
+        <node concept="2ShNRf" id="hIfNzdj" role="gfFT$">
+          <node concept="1pGfFk" id="4JmsWjDRjYF" role="2ShVmc">
+            <property role="373rjd" value="true" />
+            <ref role="37wK5l" to="co:2UDGRNXxxvO" resolve="NodeHashSet" />
+            <node concept="10Nm6u" id="4JmsWjDZ6im" role="37wK5m">
+              <node concept="29HgVG" id="4JmsWjDZ6ji" role="lGtFl">
+                <node concept="3NFfHV" id="4JmsWjDZ6kh" role="3NFExx">
+                  <node concept="3clFbS" id="4JmsWjDZ6ki" role="2VODD2">
+                    <node concept="3clFbF" id="4JmsWjDZ6kk" role="3cqZAp">
+                      <node concept="2OqwBi" id="4JmsWjDRlAS" role="3clFbG">
+                        <node concept="1PxgMI" id="4JmsWjDRlh0" role="2Oq$k0">
+                          <property role="1BlNFB" value="true" />
+                          <node concept="chp4Y" id="4JmsWjDRlrk" role="3oSUPX">
+                            <ref role="cht4Q" to="i2rk:4JmsWjDRcxX" resolve="SNodeSetCreator" />
+                          </node>
+                          <node concept="2OqwBi" id="4JmsWjDRkgQ" role="1m5AlR">
+                            <node concept="30H73N" id="4JmsWjDRkgU" role="2Oq$k0" />
+                            <node concept="3TrEf2" id="4JmsWjDRk_p" role="2OqNvi">
+                              <ref role="3Tt5mk" to="tpee:gEShVi6" resolve="creator" />
+                            </node>
+                          </node>
+                        </node>
+                        <node concept="3TrEf2" id="4JmsWjDRlRp" role="2OqNvi">
+                          <ref role="3Tt5mk" to="i2rk:4JmsWjDRhF4" resolve="setCreator" />
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+          <node concept="1W57fq" id="4JmsWjDZ6pi" role="lGtFl">
+            <node concept="3IZrLx" id="4JmsWjDZ6pj" role="3IZSJc">
+              <node concept="3clFbS" id="4JmsWjDZ6pk" role="2VODD2">
+                <node concept="3clFbF" id="4JmsWjDZ6vJ" role="3cqZAp">
+                  <node concept="2OqwBi" id="4JmsWjDZ71r" role="3clFbG">
+                    <node concept="2OqwBi" id="4JmsWjDZ6vL" role="2Oq$k0">
+                      <node concept="1PxgMI" id="4JmsWjDZ6vM" role="2Oq$k0">
+                        <property role="1BlNFB" value="true" />
+                        <node concept="chp4Y" id="4JmsWjDZ6vN" role="3oSUPX">
+                          <ref role="cht4Q" to="i2rk:4JmsWjDRcxX" resolve="SNodeSetCreator" />
+                        </node>
+                        <node concept="2OqwBi" id="4JmsWjDZ6vO" role="1m5AlR">
+                          <node concept="30H73N" id="4JmsWjDZ6vP" role="2Oq$k0" />
+                          <node concept="3TrEf2" id="4JmsWjDZ6vQ" role="2OqNvi">
+                            <ref role="3Tt5mk" to="tpee:gEShVi6" resolve="creator" />
+                          </node>
+                        </node>
+                      </node>
+                      <node concept="3TrEf2" id="4JmsWjDZ6vR" role="2OqNvi">
+                        <ref role="3Tt5mk" to="i2rk:4JmsWjDRhF4" resolve="setCreator" />
+                      </node>
+                    </node>
+                    <node concept="3x8VRR" id="4JmsWjDZ7sv" role="2OqNvi" />
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="gft3U" id="4JmsWjDZ7_9" role="UU_$l">
+              <node concept="2ShNRf" id="4JmsWjDZ7Cg" role="gfFT$">
+                <node concept="1pGfFk" id="4JmsWjDZ86u" role="2ShVmc">
+                  <property role="373rjd" value="true" />
+                  <ref role="37wK5l" to="co:2UDGRNXx5Xp" resolve="NodeHashSet" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+  </node>
+</model>
+
diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.behavior.mps b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.behavior.mps
new file mode 100644
index 00000000000..0d9ecf11492
--- /dev/null
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.behavior.mps
@@ -0,0 +1,532 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:64817ef9-6800-49cd-a257-49b6c9f53acc(com.mbeddr.mpsutil.collections.behavior)">
+  <persistence version="9" />
+  <languages>
+    <use id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel" version="19" />
+    <use id="af65afd8-f0dd-4942-87d9-63a55f2a9db1" name="jetbrains.mps.lang.behavior" version="2" />
+    <devkit ref="fbc25dd2-5da4-483a-8b19-70928e1b62d7(jetbrains.mps.devkit.general-purpose)" />
+  </languages>
+  <imports>
+    <import index="tpek" ref="r:00000000-0000-4000-0000-011c895902c0(jetbrains.mps.baseLanguage.behavior)" />
+    <import index="tpcu" ref="r:00000000-0000-4000-0000-011c89590282(jetbrains.mps.lang.core.behavior)" />
+    <import index="tpce" ref="r:00000000-0000-4000-0000-011c89590292(jetbrains.mps.lang.structure.structure)" />
+    <import index="33ny" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.util(JDK/)" />
+    <import index="tp2q" ref="r:00000000-0000-4000-0000-011c8959032e(jetbrains.mps.baseLanguage.collections.structure)" />
+    <import index="tpck" ref="r:00000000-0000-4000-0000-011c89590288(jetbrains.mps.lang.core.structure)" />
+    <import index="mhbf" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.model(MPS.OpenAPI/)" />
+    <import index="18ew" ref="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea/java:jetbrains.mps.util(MPS.Core/)" />
+    <import index="tpee" ref="r:00000000-0000-4000-0000-011c895902ca(jetbrains.mps.baseLanguage.structure)" />
+    <import index="i2rk" ref="r:baa9d6ac-6b79-40af-928c-6bdcbfd7265f(com.mbeddr.mpsutil.collections.structure)" implicit="true" />
+    <import index="wyt6" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.lang(JDK/)" implicit="true" />
+  </imports>
+  <registry>
+    <language id="af65afd8-f0dd-4942-87d9-63a55f2a9db1" name="jetbrains.mps.lang.behavior">
+      <concept id="1225194240794" name="jetbrains.mps.lang.behavior.structure.ConceptBehavior" flags="ng" index="13h7C7">
+        <reference id="1225194240799" name="concept" index="13h7C2" />
+        <child id="1225194240805" name="method" index="13h7CS" />
+        <child id="1225194240801" name="constructor" index="13h7CW" />
+      </concept>
+      <concept id="1225194413805" name="jetbrains.mps.lang.behavior.structure.ConceptConstructorDeclaration" flags="in" index="13hLZK" />
+      <concept id="1225194472830" name="jetbrains.mps.lang.behavior.structure.ConceptMethodDeclaration" flags="ng" index="13i0hz">
+        <property id="1225194472832" name="isVirtual" index="13i0it" />
+        <property id="1225194472834" name="isAbstract" index="13i0iv" />
+        <reference id="1225194472831" name="overriddenMethod" index="13i0hy" />
+      </concept>
+      <concept id="1225194691553" name="jetbrains.mps.lang.behavior.structure.ThisNodeExpression" flags="nn" index="13iPFW" />
+    </language>
+    <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
+      <concept id="1080223426719" name="jetbrains.mps.baseLanguage.structure.OrExpression" flags="nn" index="22lmx$" />
+      <concept id="1202948039474" name="jetbrains.mps.baseLanguage.structure.InstanceMethodCallOperation" flags="nn" index="liA8E" />
+      <concept id="1197027756228" name="jetbrains.mps.baseLanguage.structure.DotExpression" flags="nn" index="2OqwBi">
+        <child id="1197027771414" name="operand" index="2Oq$k0" />
+        <child id="1197027833540" name="operation" index="2OqNvi" />
+      </concept>
+      <concept id="1145552977093" name="jetbrains.mps.baseLanguage.structure.GenericNewExpression" flags="nn" index="2ShNRf">
+        <child id="1145553007750" name="creator" index="2ShVmc" />
+      </concept>
+      <concept id="1137021947720" name="jetbrains.mps.baseLanguage.structure.ConceptFunction" flags="in" index="2VMwT0">
+        <child id="1137022507850" name="body" index="2VODD2" />
+      </concept>
+      <concept id="1070475926800" name="jetbrains.mps.baseLanguage.structure.StringLiteral" flags="nn" index="Xl_RD">
+        <property id="1070475926801" name="value" index="Xl_RC" />
+      </concept>
+      <concept id="1081236700937" name="jetbrains.mps.baseLanguage.structure.StaticMethodCall" flags="nn" index="2YIFZM">
+        <reference id="1144433194310" name="classConcept" index="1Pybhc" />
+      </concept>
+      <concept id="1070534058343" name="jetbrains.mps.baseLanguage.structure.NullLiteral" flags="nn" index="10Nm6u" />
+      <concept id="1070534644030" name="jetbrains.mps.baseLanguage.structure.BooleanType" flags="in" index="10P_77" />
+      <concept id="1068431474542" name="jetbrains.mps.baseLanguage.structure.VariableDeclaration" flags="ng" index="33uBYm">
+        <child id="1068431790190" name="initializer" index="33vP2m" />
+      </concept>
+      <concept id="1068498886296" name="jetbrains.mps.baseLanguage.structure.VariableReference" flags="nn" index="37vLTw">
+        <reference id="1068581517664" name="variableDeclaration" index="3cqZAo" />
+      </concept>
+      <concept id="1068498886292" name="jetbrains.mps.baseLanguage.structure.ParameterDeclaration" flags="ir" index="37vLTG" />
+      <concept id="1225271177708" name="jetbrains.mps.baseLanguage.structure.StringType" flags="in" index="17QB3L" />
+      <concept id="4972933694980447171" name="jetbrains.mps.baseLanguage.structure.BaseVariableDeclaration" flags="ng" index="19Szcq">
+        <child id="5680397130376446158" name="type" index="1tU5fm" />
+      </concept>
+      <concept id="1068580123132" name="jetbrains.mps.baseLanguage.structure.BaseMethodDeclaration" flags="ng" index="3clF44">
+        <child id="1068580123133" name="returnType" index="3clF45" />
+        <child id="1068580123134" name="parameter" index="3clF46" />
+        <child id="1068580123135" name="body" index="3clF47" />
+      </concept>
+      <concept id="1068580123152" name="jetbrains.mps.baseLanguage.structure.EqualsExpression" flags="nn" index="3clFbC" />
+      <concept id="1068580123155" name="jetbrains.mps.baseLanguage.structure.ExpressionStatement" flags="nn" index="3clFbF">
+        <child id="1068580123156" name="expression" index="3clFbG" />
+      </concept>
+      <concept id="1068580123159" name="jetbrains.mps.baseLanguage.structure.IfStatement" flags="nn" index="3clFbJ">
+        <child id="1068580123160" name="condition" index="3clFbw" />
+        <child id="1068580123161" name="ifTrue" index="3clFbx" />
+      </concept>
+      <concept id="1068580123136" name="jetbrains.mps.baseLanguage.structure.StatementList" flags="sn" stub="5293379017992965193" index="3clFbS">
+        <child id="1068581517665" name="statement" index="3cqZAp" />
+      </concept>
+      <concept id="1068580123137" name="jetbrains.mps.baseLanguage.structure.BooleanConstant" flags="nn" index="3clFbT">
+        <property id="1068580123138" name="value" index="3clFbU" />
+      </concept>
+      <concept id="1068581242875" name="jetbrains.mps.baseLanguage.structure.PlusExpression" flags="nn" index="3cpWs3" />
+      <concept id="1068581242878" name="jetbrains.mps.baseLanguage.structure.ReturnStatement" flags="nn" index="3cpWs6">
+        <child id="1068581517676" name="expression" index="3cqZAk" />
+      </concept>
+      <concept id="1068581242864" name="jetbrains.mps.baseLanguage.structure.LocalVariableDeclarationStatement" flags="nn" index="3cpWs8">
+        <child id="1068581242865" name="localVariableDeclaration" index="3cpWs9" />
+      </concept>
+      <concept id="1068581242863" name="jetbrains.mps.baseLanguage.structure.LocalVariableDeclaration" flags="nr" index="3cpWsn" />
+      <concept id="1068581517677" name="jetbrains.mps.baseLanguage.structure.VoidType" flags="in" index="3cqZAl" />
+      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
+        <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
+        <child id="1068499141038" name="actualArgument" index="37wK5m" />
+      </concept>
+      <concept id="1107535904670" name="jetbrains.mps.baseLanguage.structure.ClassifierType" flags="in" index="3uibUv">
+        <reference id="1107535924139" name="classifier" index="3uigEE" />
+        <child id="1109201940907" name="parameter" index="11_B2D" />
+      </concept>
+      <concept id="1081773326031" name="jetbrains.mps.baseLanguage.structure.BinaryOperation" flags="nn" index="3uHJSO">
+        <child id="1081773367579" name="rightExpression" index="3uHU7w" />
+        <child id="1081773367580" name="leftExpression" index="3uHU7B" />
+      </concept>
+      <concept id="1178549954367" name="jetbrains.mps.baseLanguage.structure.IVisible" flags="ng" index="1B3ioH">
+        <child id="1178549979242" name="visibility" index="1B3o_S" />
+      </concept>
+      <concept id="1163668896201" name="jetbrains.mps.baseLanguage.structure.TernaryOperatorExpression" flags="nn" index="3K4zz7">
+        <child id="1163668914799" name="condition" index="3K4Cdx" />
+        <child id="1163668922816" name="ifTrue" index="3K4E3e" />
+        <child id="1163668934364" name="ifFalse" index="3K4GZi" />
+      </concept>
+      <concept id="1146644602865" name="jetbrains.mps.baseLanguage.structure.PublicVisibility" flags="nn" index="3Tm1VV" />
+      <concept id="1146644641414" name="jetbrains.mps.baseLanguage.structure.ProtectedVisibility" flags="nn" index="3Tmbuc" />
+      <concept id="1116615150612" name="jetbrains.mps.baseLanguage.structure.ClassifierClassExpression" flags="nn" index="3VsKOn">
+        <reference id="1116615189566" name="classifier" index="3VsUkX" />
+      </concept>
+    </language>
+    <language id="3a13115c-633c-4c5c-bbcc-75c4219e9555" name="jetbrains.mps.lang.quotation">
+      <concept id="1196350785113" name="jetbrains.mps.lang.quotation.structure.Quotation" flags="nn" index="2c44tf">
+        <child id="1196350785114" name="quotedNode" index="2c44tc" />
+      </concept>
+    </language>
+    <language id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel">
+      <concept id="1140725362528" name="jetbrains.mps.lang.smodel.structure.Link_SetTargetOperation" flags="nn" index="2oxUTD">
+        <child id="1140725362529" name="linkTarget" index="2oxUTC" />
+      </concept>
+      <concept id="1179409122411" name="jetbrains.mps.lang.smodel.structure.Node_ConceptMethodCall" flags="nn" index="2qgKlT" />
+      <concept id="2644386474300074836" name="jetbrains.mps.lang.smodel.structure.ConceptIdRefExpression" flags="nn" index="35c_gC">
+        <reference id="2644386474300074837" name="conceptDeclaration" index="35c_gD" />
+      </concept>
+      <concept id="6677504323281689838" name="jetbrains.mps.lang.smodel.structure.SConceptType" flags="in" index="3bZ5Sz" />
+      <concept id="1171999116870" name="jetbrains.mps.lang.smodel.structure.Node_IsNullOperation" flags="nn" index="3w_OXm" />
+      <concept id="1172008320231" name="jetbrains.mps.lang.smodel.structure.Node_IsNotNullOperation" flags="nn" index="3x8VRR" />
+      <concept id="1180636770613" name="jetbrains.mps.lang.smodel.structure.SNodeCreator" flags="nn" index="3zrR0B">
+        <child id="1180636770616" name="createdType" index="3zrR0E" />
+      </concept>
+      <concept id="1144146199828" name="jetbrains.mps.lang.smodel.structure.Node_CopyOperation" flags="nn" index="1$rogu" />
+      <concept id="1138055754698" name="jetbrains.mps.lang.smodel.structure.SNodeType" flags="in" index="3Tqbb2">
+        <reference id="1138405853777" name="concept" index="ehGHo" />
+      </concept>
+      <concept id="1138056022639" name="jetbrains.mps.lang.smodel.structure.SPropertyAccess" flags="nn" index="3TrcHB">
+        <reference id="1138056395725" name="property" index="3TsBF5" />
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+      <concept id="1138056143562" name="jetbrains.mps.lang.smodel.structure.SLinkAccess" flags="nn" index="3TrEf2">
+        <reference id="1138056516764" name="link" index="3Tt5mk" />
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+    </language>
+    <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" name="jetbrains.mps.lang.core">
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+        <property id="1169194664001" name="name" index="TrG5h" />
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+    <language id="83888646-71ce-4f1c-9c53-c54016f6ad4f" name="jetbrains.mps.baseLanguage.collections">
+      <concept id="540871147943773365" name="jetbrains.mps.baseLanguage.collections.structure.SingleArgumentSequenceOperation" flags="nn" index="25WWJ4">
+        <child id="540871147943773366" name="argument" index="25WWJ7" />
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+        <child id="1151688676805" name="elementType" index="_ZDj9" />
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+      <concept id="1237721394592" name="jetbrains.mps.baseLanguage.collections.structure.AbstractContainerCreator" flags="nn" index="HWqM0">
+        <child id="1237721435808" name="initValue" index="HW$Y0" />
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+        <child id="1197683466920" name="keyType" index="3rvQeY" />
+        <child id="1197683475734" name="valueType" index="3rvSg0" />
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+    <node concept="13i0hz" id="hEwIkrC" role="13h7CS">
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+      <ref role="13i0hy" to="tpcu:hEwIMiw" resolve="getPresentation" />
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+              <node concept="3cpWs3" id="hEwIkrQ" role="3uHU7B">
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+                    <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+                  </node>
+                </node>
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+      <node concept="17QB3L" id="4druX3W0A1a" role="3clF45" />
+      <node concept="3Tm1VV" id="hJrm0Ga" role="1B3o_S" />
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+    <node concept="13i0hz" id="hEwIkrY" role="13h7CS">
+      <property role="TrG5h" value="getVariableSuffixes" />
+      <ref role="13i0hy" to="tpek:hEwIzNo" resolve="getVariableSuffixes" />
+      <node concept="3clFbS" id="hEwIkrZ" role="3clF47">
+        <node concept="3cpWs8" id="hEwIks0" role="3cqZAp">
+          <node concept="3cpWsn" id="hEwIks1" role="3cpWs9">
+            <property role="TrG5h" value="variableSuffixes" />
+            <node concept="_YKpA" id="hEwIks2" role="1tU5fm">
+              <node concept="17QB3L" id="4druX3W0A1x" role="_ZDj9" />
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+            <node concept="2ShNRf" id="hEwIks4" role="33vP2m">
+              <node concept="Tc6Ow" id="hEwIks5" role="2ShVmc">
+                <node concept="17QB3L" id="4druX3W0A0V" role="HW$YZ" />
+                <node concept="Xl_RD" id="hEwIks7" role="HW$Y0">
+                  <property role="Xl_RC" value="nodes" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbJ" id="hEwIks8" role="3cqZAp">
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+            <node concept="3cpWs8" id="hEwIksa" role="3cqZAp">
+              <node concept="3cpWsn" id="hEwIksb" role="3cpWs9">
+                <property role="TrG5h" value="name" />
+                <node concept="17QB3L" id="4druX3W0A0Z" role="1tU5fm" />
+                <node concept="2YIFZM" id="hEwIksd" role="33vP2m">
+                  <ref role="37wK5l" to="18ew:~NameUtil.pluralize(java.lang.String)" resolve="pluralize" />
+                  <ref role="1Pybhc" to="18ew:~NameUtil" resolve="NameUtil" />
+                  <node concept="2YIFZM" id="hEwIkse" role="37wK5m">
+                    <ref role="37wK5l" to="18ew:~NameUtil.decapitalize(java.lang.String)" resolve="decapitalize" />
+                    <ref role="1Pybhc" to="18ew:~NameUtil" resolve="NameUtil" />
+                    <node concept="2OqwBi" id="hEwIksf" role="37wK5m">
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+                        <node concept="3TrEf2" id="hEwIksi" role="2OqNvi">
+                          <ref role="3Tt5mk" to="i2rk:gEI9Wgx" resolve="elementConcept" />
+                        </node>
+                      </node>
+                      <node concept="3TrcHB" id="hEwIksj" role="2OqNvi">
+                        <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
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+      <ref role="13i0hy" to="tpek:hEwIzOd" resolve="getClassExpression" />
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+            <node concept="3VsKOn" id="hEwIksV" role="2c44tc">
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+    <node concept="13i0hz" id="32KZwowYg6a" role="13h7CS">
+      <property role="TrG5h" value="hasMissingParameters" />
+      <ref role="13i0hy" to="tpek:32KZwowVoMu" resolve="hasMissingParameters" />
+      <node concept="3clFbS" id="32KZwowYg6d" role="3clF47">
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+              <node concept="3TrEf2" id="32KZwowYg6o" role="2OqNvi">
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+            </node>
+            <node concept="3w_OXm" id="32KZwowYg6t" role="2OqNvi" />
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+    <node concept="13i0hz" id="5uUZ$FUUb6V" role="13h7CS">
+      <property role="13i0iv" value="false" />
+      <property role="TrG5h" value="canBeCoerced" />
+      <property role="13i0it" value="false" />
+      <ref role="13i0hy" to="tpek:476YRQvP9l3" resolve="canBeCoerced" />
+      <node concept="3Tm1VV" id="5uUZ$FUUb6W" role="1B3o_S" />
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+              <node concept="3clFbT" id="5wNjLS4fEdN" role="3cqZAk">
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+          <node concept="22lmx$" id="xCjMjVCrns" role="3clFbw">
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+
diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.constraints.mps b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.constraints.mps
new file mode 100644
index 00000000000..3c1dd970c1c
--- /dev/null
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.constraints.mps
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:b44263d8-ad21-4fbf-b1ed-856ec6359da0(com.mbeddr.mpsutil.collections.constraints)">
+  <persistence version="9" />
+  <languages>
+    <use id="5dae8159-ab99-46bb-a40d-0cee30ee7018" name="jetbrains.mps.lang.constraints.rules.kinds" version="0" />
+    <use id="ea3159bf-f48e-4720-bde2-86dba75f0d34" name="jetbrains.mps.lang.context.defs" version="0" />
+    <use id="e51810c5-7308-4642-bcb6-469e61b5dd18" name="jetbrains.mps.lang.constraints.msg.specification" version="0" />
+    <use id="134c38d4-e3af-4d9e-b069-1c7df0a4005d" name="jetbrains.mps.lang.constraints.rules.skeleton" version="0" />
+    <use id="b3551702-269c-4f05-ba61-58060cef4292" name="jetbrains.mps.lang.rulesAndMessages" version="0" />
+    <use id="3f4bc5f5-c6c1-4a28-8b10-c83066ffa4a1" name="jetbrains.mps.lang.constraints" version="6" />
+    <use id="13744753-c81f-424a-9c1b-cf8943bf4e86" name="jetbrains.mps.lang.sharedConcepts" version="0" />
+    <use id="3ad5badc-1d9c-461c-b7b1-fa2fcd0a0ae7" name="jetbrains.mps.lang.context" version="0" />
+    <use id="ad93155d-79b2-4759-b10c-55123e763903" name="jetbrains.mps.lang.messages" version="0" />
+    <devkit ref="00000000-0000-4000-0000-5604ebd4f22c(jetbrains.mps.devkit.aspect.constraints)" />
+  </languages>
+  <imports />
+  <registry />
+</model>
+
diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.editor.mps b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.editor.mps
new file mode 100644
index 00000000000..0ce5dda7360
--- /dev/null
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.editor.mps
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:310f1b3d-c384-4c7a-9fb9-b1c0d8b8d542(com.mbeddr.mpsutil.collections.editor)">
+  <persistence version="9" />
+  <languages>
+    <use id="18bc6592-03a6-4e29-a83a-7ff23bde13ba" name="jetbrains.mps.lang.editor" version="14" />
+    <use id="9d69e719-78c8-4286-90db-fb19c107d049" name="com.mbeddr.mpsutil.grammarcells" version="2" />
+    <devkit ref="fbc25dd2-5da4-483a-8b19-70928e1b62d7(jetbrains.mps.devkit.general-purpose)" />
+  </languages>
+  <imports>
+    <import index="tpen" ref="r:00000000-0000-4000-0000-011c895902c3(jetbrains.mps.baseLanguage.editor)" />
+    <import index="i2rk" ref="r:baa9d6ac-6b79-40af-928c-6bdcbfd7265f(com.mbeddr.mpsutil.collections.structure)" implicit="true" />
+    <import index="tpck" ref="r:00000000-0000-4000-0000-011c89590288(jetbrains.mps.lang.core.structure)" implicit="true" />
+  </imports>
+  <registry>
+    <language id="18bc6592-03a6-4e29-a83a-7ff23bde13ba" name="jetbrains.mps.lang.editor">
+      <concept id="1071666914219" name="jetbrains.mps.lang.editor.structure.ConceptEditorDeclaration" flags="ig" index="24kQdi" />
+      <concept id="1106270549637" name="jetbrains.mps.lang.editor.structure.CellLayout_Horizontal" flags="nn" index="2iRfu4" />
+      <concept id="1237303669825" name="jetbrains.mps.lang.editor.structure.CellLayout_Indent" flags="nn" index="l2Vlx" />
+      <concept id="1080736578640" name="jetbrains.mps.lang.editor.structure.BaseEditorComponent" flags="ig" index="2wURMF">
+        <child id="1080736633877" name="cellModel" index="2wV5jI" />
+      </concept>
+      <concept id="1078938745671" name="jetbrains.mps.lang.editor.structure.EditorComponentDeclaration" flags="ig" index="PKFIW" />
+      <concept id="1186403694788" name="jetbrains.mps.lang.editor.structure.ColorStyleClassItem" flags="ln" index="VaVBg">
+        <property id="1186403713874" name="color" index="Vb096" />
+      </concept>
+      <concept id="1186404549998" name="jetbrains.mps.lang.editor.structure.ForegroundColorStyleClassItem" flags="ln" index="VechU" />
+      <concept id="1088013125922" name="jetbrains.mps.lang.editor.structure.CellModel_RefCell" flags="sg" stub="730538219795941030" index="1iCGBv">
+        <child id="1088186146602" name="editorComponent" index="1sWHZn" />
+      </concept>
+      <concept id="1381004262292414836" name="jetbrains.mps.lang.editor.structure.ICellStyle" flags="ng" index="1k5N5V">
+        <reference id="1381004262292426837" name="parentStyleClass" index="1k5W1q" />
+      </concept>
+      <concept id="1088185857835" name="jetbrains.mps.lang.editor.structure.InlineEditorComponent" flags="ig" index="1sVBvm" />
+      <concept id="1215007762405" name="jetbrains.mps.lang.editor.structure.FloatStyleClassItem" flags="ln" index="3$6MrZ">
+        <property id="1215007802031" name="value" index="3$6WeP" />
+      </concept>
+      <concept id="1215007897487" name="jetbrains.mps.lang.editor.structure.PaddingRightStyleClassItem" flags="ln" index="3$7jql" />
+      <concept id="1139848536355" name="jetbrains.mps.lang.editor.structure.CellModel_WithRole" flags="ng" index="1$h60E">
+        <property id="1214560368769" name="emptyNoTargetText" index="39s7Ar" />
+        <property id="1139852716018" name="noTargetText" index="1$x2rV" />
+        <property id="1140017977771" name="readOnly" index="1Intyy" />
+        <reference id="1140103550593" name="relationDeclaration" index="1NtTu8" />
+      </concept>
+      <concept id="1073389446423" name="jetbrains.mps.lang.editor.structure.CellModel_Collection" flags="sn" stub="3013115976261988961" index="3EZMnI">
+        <child id="1106270802874" name="cellLayout" index="2iSdaV" />
+        <child id="1073389446424" name="childCellModel" index="3EZMnx" />
+      </concept>
+      <concept id="1073389577006" name="jetbrains.mps.lang.editor.structure.CellModel_Constant" flags="sn" stub="3610246225209162225" index="3F0ifn">
+        <property id="1073389577007" name="text" index="3F0ifm" />
+      </concept>
+      <concept id="1073389658414" name="jetbrains.mps.lang.editor.structure.CellModel_Property" flags="sg" stub="730538219796134133" index="3F0A7n" />
+      <concept id="1219418625346" name="jetbrains.mps.lang.editor.structure.IStyleContainer" flags="ng" index="3F0Thp">
+        <child id="1219418656006" name="styleItem" index="3F10Kt" />
+      </concept>
+      <concept id="1073389882823" name="jetbrains.mps.lang.editor.structure.CellModel_RefNode" flags="sg" stub="730538219795960754" index="3F1sOY" />
+      <concept id="1166049232041" name="jetbrains.mps.lang.editor.structure.AbstractComponent" flags="ng" index="1XWOmA">
+        <reference id="1166049300910" name="conceptDeclaration" index="1XX52x" />
+      </concept>
+    </language>
+    <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
+      <concept id="1137021947720" name="jetbrains.mps.baseLanguage.structure.ConceptFunction" flags="in" index="2VMwT0">
+        <child id="1137022507850" name="body" index="2VODD2" />
+      </concept>
+      <concept id="1070475926800" name="jetbrains.mps.baseLanguage.structure.StringLiteral" flags="nn" index="Xl_RD">
+        <property id="1070475926801" name="value" index="Xl_RC" />
+      </concept>
+      <concept id="1068580123155" name="jetbrains.mps.baseLanguage.structure.ExpressionStatement" flags="nn" index="3clFbF">
+        <child id="1068580123156" name="expression" index="3clFbG" />
+      </concept>
+      <concept id="1068580123136" name="jetbrains.mps.baseLanguage.structure.StatementList" flags="sn" stub="5293379017992965193" index="3clFbS">
+        <child id="1068581517665" name="statement" index="3cqZAp" />
+      </concept>
+    </language>
+    <language id="9d69e719-78c8-4286-90db-fb19c107d049" name="com.mbeddr.mpsutil.grammarcells">
+      <concept id="9041925471455857605" name="com.mbeddr.mpsutil.grammarcells.structure.Cell_DescriptionText" flags="ig" index="uPpia" />
+      <concept id="5083944728298846680" name="com.mbeddr.mpsutil.grammarcells.structure.OptionalCell" flags="ng" index="_tjkj">
+        <child id="5083944728298846681" name="option" index="_tjki" />
+      </concept>
+      <concept id="848437706375087728" name="com.mbeddr.mpsutil.grammarcells.structure.ICanHaveDescriptionText" flags="ng" index="1djCvD">
+        <child id="848437706375087729" name="descriptionText" index="1djCvC" />
+      </concept>
+    </language>
+    <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" name="jetbrains.mps.lang.core">
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+        <property id="1169194664001" name="name" index="TrG5h" />
+      </concept>
+    </language>
+  </registry>
+  <node concept="24kQdi" id="5wNjLS4fqEl">
+    <ref role="1XX52x" to="i2rk:5wNjLS4fqEi" resolve="SNodeSetType" />
+    <node concept="3EZMnI" id="gEIaltJ" role="2wV5jI">
+      <node concept="3F0ifn" id="gEIaltK" role="3EZMnx">
+        <property role="3F0ifm" value="nset" />
+        <ref role="1k5W1q" to="tpen:hgVS8CF" resolve="KeyWord" />
+        <node concept="3$7jql" id="hFHA57K" role="3F10Kt">
+          <property role="3$6WeP" value="0.0" />
+        </node>
+      </node>
+      <node concept="3F0ifn" id="gEIaltL" role="3EZMnx">
+        <property role="3F0ifm" value="&lt;" />
+        <ref role="1k5W1q" to="tpen:hY9fg1G" resolve="LeftParenAfterName" />
+      </node>
+      <node concept="1iCGBv" id="gEIasb5" role="3EZMnx">
+        <property role="39s7Ar" value="true" />
+        <ref role="1NtTu8" to="i2rk:gEI9Wgx" resolve="elementConcept" />
+        <node concept="1sVBvm" id="gEIasb6" role="1sWHZn">
+          <node concept="3F0A7n" id="gEIat7U" role="2wV5jI">
+            <property role="1Intyy" value="true" />
+            <property role="1$x2rV" value="&lt;no name&gt;" />
+            <ref role="1NtTu8" to="tpck:h0TrG11" resolve="name" />
+            <node concept="VechU" id="hEZR8mY" role="3F10Kt">
+              <property role="Vb096" value="g1_qVrt" />
+            </node>
+            <node concept="3$7jql" id="hFH_rY2" role="3F10Kt">
+              <property role="3$6WeP" value="0.0" />
+            </node>
+          </node>
+        </node>
+        <node concept="3$7jql" id="hJwgsgQ" role="3F10Kt">
+          <property role="3$6WeP" value="0.0" />
+        </node>
+      </node>
+      <node concept="3F0ifn" id="gEIaltR" role="3EZMnx">
+        <property role="3F0ifm" value="&gt;" />
+        <ref role="1k5W1q" to="tpen:hFCSUmN" resolve="RightParen" />
+      </node>
+      <node concept="l2Vlx" id="i0NEeNA" role="2iSdaV" />
+    </node>
+  </node>
+  <node concept="PKFIW" id="7Oamrh2d1a_">
+    <property role="TrG5h" value="DummyForGrammarCells" />
+    <ref role="1XX52x" to="tpck:gw2VY9q" resolve="BaseConcept" />
+    <node concept="3F0ifn" id="7Oamrh2d1aA" role="2wV5jI">
+      <property role="3F0ifm" value="Workaround to fix contributions to BaseConcept generated by grammarCells." />
+    </node>
+  </node>
+  <node concept="24kQdi" id="4JmsWjDRcEg">
+    <ref role="1XX52x" to="i2rk:4JmsWjDRcxX" resolve="SNodeSetCreator" />
+    <node concept="3EZMnI" id="4JmsWjDRhE0" role="2wV5jI">
+      <node concept="2iRfu4" id="4JmsWjDRhE1" role="2iSdaV" />
+      <node concept="3F1sOY" id="4JmsWjDRcEY" role="3EZMnx">
+        <ref role="1NtTu8" to="i2rk:4JmsWjDRcBP" resolve="createdType" />
+      </node>
+      <node concept="_tjkj" id="4JmsWjDRhIe" role="3EZMnx">
+        <node concept="3EZMnI" id="4JmsWjDRhK2" role="_tjki">
+          <node concept="2iRfu4" id="4JmsWjDRhK3" role="2iSdaV" />
+          <node concept="3F0ifn" id="4JmsWjDRhIC" role="3EZMnx">
+            <property role="3F0ifm" value="by" />
+            <ref role="1k5W1q" to="tpen:hgVS8CF" resolve="KeyWord" />
+          </node>
+          <node concept="3F1sOY" id="4JmsWjDRhKL" role="3EZMnx">
+            <property role="39s7Ar" value="true" />
+            <property role="1$x2rV" value="new hashset" />
+            <ref role="1NtTu8" to="i2rk:4JmsWjDRhF4" resolve="setCreator" />
+          </node>
+        </node>
+        <node concept="uPpia" id="4JmsWjE3HsV" role="1djCvC">
+          <node concept="3clFbS" id="4JmsWjE3HsW" role="2VODD2">
+            <node concept="3clFbF" id="4JmsWjE3HOn" role="3cqZAp">
+              <node concept="Xl_RD" id="4JmsWjE3HOm" role="3clFbG">
+                <property role="Xl_RC" value="by using the following set" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+  </node>
+</model>
+
diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.structure.mps b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.structure.mps
new file mode 100644
index 00000000000..db79e937d24
--- /dev/null
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.structure.mps
@@ -0,0 +1,76 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:baa9d6ac-6b79-40af-928c-6bdcbfd7265f(com.mbeddr.mpsutil.collections.structure)">
+  <persistence version="9" />
+  <languages>
+    <devkit ref="78434eb8-b0e5-444b-850d-e7c4ad2da9ab(jetbrains.mps.devkit.aspect.structure)" />
+  </languages>
+  <imports>
+    <import index="tpce" ref="r:00000000-0000-4000-0000-011c89590292(jetbrains.mps.lang.structure.structure)" />
+    <import index="tpee" ref="r:00000000-0000-4000-0000-011c895902ca(jetbrains.mps.baseLanguage.structure)" />
+  </imports>
+  <registry>
+    <language id="c72da2b9-7cce-4447-8389-f407dc1158b7" name="jetbrains.mps.lang.structure">
+      <concept id="1169125787135" name="jetbrains.mps.lang.structure.structure.AbstractConceptDeclaration" flags="ig" index="PkWjJ">
+        <property id="6714410169261853888" name="conceptId" index="EcuMT" />
+        <property id="4628067390765907488" name="conceptShortDescription" index="R4oN_" />
+        <property id="5092175715804935370" name="conceptAlias" index="34LRSv" />
+        <child id="1071489727083" name="linkDeclaration" index="1TKVEi" />
+      </concept>
+      <concept id="1169127622168" name="jetbrains.mps.lang.structure.structure.InterfaceConceptReference" flags="ig" index="PrWs8">
+        <reference id="1169127628841" name="intfc" index="PrY4T" />
+      </concept>
+      <concept id="1071489090640" name="jetbrains.mps.lang.structure.structure.ConceptDeclaration" flags="ig" index="1TIwiD">
+        <reference id="1071489389519" name="extends" index="1TJDcQ" />
+        <child id="1169129564478" name="implements" index="PzmwI" />
+      </concept>
+      <concept id="1071489288298" name="jetbrains.mps.lang.structure.structure.LinkDeclaration" flags="ig" index="1TJgyj">
+        <property id="1071599776563" name="role" index="20kJfa" />
+        <property id="1071599893252" name="sourceCardinality" index="20lbJX" />
+        <property id="1071599937831" name="metaClass" index="20lmBu" />
+        <property id="241647608299431140" name="linkId" index="IQ2ns" />
+        <reference id="1071599976176" name="target" index="20lvS9" />
+      </concept>
+    </language>
+    <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" name="jetbrains.mps.lang.core">
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+        <property id="1169194664001" name="name" index="TrG5h" />
+      </concept>
+    </language>
+  </registry>
+  <node concept="1TIwiD" id="5wNjLS4fqEi">
+    <property role="EcuMT" value="6355510489488665234" />
+    <property role="TrG5h" value="SNodeSetType" />
+    <property role="34LRSv" value="nset&lt;&gt;" />
+    <property role="R4oN_" value="set of nodes" />
+    <ref role="1TJDcQ" to="tpee:fz3vP1H" resolve="Type" />
+    <node concept="1TJgyj" id="gEI9Wgx" role="1TKVEi">
+      <property role="20kJfa" value="elementConcept" />
+      <property role="IQ2ns" value="1145383142433" />
+      <ref role="20lvS9" to="tpce:h0PkWnZ" resolve="AbstractConceptDeclaration" />
+    </node>
+    <node concept="PrWs8" id="5wNjLS4fqEj" role="PzmwI">
+      <ref role="PrY4T" to="tpee:3zZky3wF74d" resolve="IGenericType" />
+    </node>
+  </node>
+  <node concept="1TIwiD" id="4JmsWjDRcxX">
+    <property role="EcuMT" value="5464682487435020413" />
+    <property role="TrG5h" value="SNodeSetCreator" />
+    <property role="34LRSv" value="nset" />
+    <property role="R4oN_" value="set of (s)nodes" />
+    <ref role="1TJDcQ" to="tpee:gEShaYr" resolve="AbstractCreator" />
+    <node concept="1TJgyj" id="4JmsWjDRcBP" role="1TKVEi">
+      <property role="IQ2ns" value="5464682487435020789" />
+      <property role="20lmBu" value="fLJjDmT/aggregation" />
+      <property role="20kJfa" value="createdType" />
+      <property role="20lbJX" value="fLJekj4/_1" />
+      <ref role="20lvS9" node="5wNjLS4fqEi" resolve="SNodeSetType" />
+    </node>
+    <node concept="1TJgyj" id="4JmsWjDRhF4" role="1TKVEi">
+      <property role="IQ2ns" value="5464682487435041476" />
+      <property role="20lmBu" value="fLJjDmT/aggregation" />
+      <property role="20kJfa" value="setCreator" />
+      <ref role="20lvS9" to="tpee:fz3vP1J" resolve="Expression" />
+    </node>
+  </node>
+</model>
+
diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.typesystem.mps b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.typesystem.mps
new file mode 100644
index 00000000000..ec81675a8e4
--- /dev/null
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.typesystem.mps
@@ -0,0 +1,688 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:98449c2c-1cb6-4e11-8e93-d22a8497c2fe(com.mbeddr.mpsutil.collections.typesystem)">
+  <persistence version="9" />
+  <languages>
+    <use id="7a5dda62-9140-4668-ab76-d5ed1746f2b2" name="jetbrains.mps.lang.typesystem" version="5" />
+    <use id="e89e1550-b8fe-4f0d-a7fd-487968b42405" name="com.mbeddr.mpsutil.collections" version="0" />
+    <devkit ref="00000000-0000-4000-0000-1de82b3a4936(jetbrains.mps.devkit.aspect.typesystem)" />
+  </languages>
+  <imports>
+    <import index="i2rk" ref="r:baa9d6ac-6b79-40af-928c-6bdcbfd7265f(com.mbeddr.mpsutil.collections.structure)" />
+    <import index="33ny" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.util(JDK/)" />
+    <import index="mhbf" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.model(MPS.OpenAPI/)" />
+    <import index="tp25" ref="r:00000000-0000-4000-0000-011c89590301(jetbrains.mps.lang.smodel.structure)" />
+    <import index="tpck" ref="r:00000000-0000-4000-0000-011c89590288(jetbrains.mps.lang.core.structure)" implicit="true" />
+    <import index="tpee" ref="r:00000000-0000-4000-0000-011c895902ca(jetbrains.mps.baseLanguage.structure)" implicit="true" />
+    <import index="tpce" ref="r:00000000-0000-4000-0000-011c89590292(jetbrains.mps.lang.structure.structure)" implicit="true" />
+    <import index="tpcn" ref="r:00000000-0000-4000-0000-011c8959028b(jetbrains.mps.lang.structure.behavior)" implicit="true" />
+    <import index="tp2q" ref="r:00000000-0000-4000-0000-011c8959032e(jetbrains.mps.baseLanguage.collections.structure)" implicit="true" />
+  </imports>
+  <registry>
+    <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
+      <concept id="1082485599095" name="jetbrains.mps.baseLanguage.structure.BlockStatement" flags="nn" index="9aQIb">
+        <child id="1082485599096" name="statements" index="9aQI4" />
+      </concept>
+      <concept id="1154032098014" name="jetbrains.mps.baseLanguage.structure.AbstractLoopStatement" flags="nn" index="2LF5Ji">
+        <child id="1154032183016" name="body" index="2LFqv$" />
+      </concept>
+      <concept id="1197027756228" name="jetbrains.mps.baseLanguage.structure.DotExpression" flags="nn" index="2OqwBi">
+        <child id="1197027771414" name="operand" index="2Oq$k0" />
+        <child id="1197027833540" name="operation" index="2OqNvi" />
+      </concept>
+      <concept id="1145552977093" name="jetbrains.mps.baseLanguage.structure.GenericNewExpression" flags="nn" index="2ShNRf">
+        <child id="1145553007750" name="creator" index="2ShVmc" />
+      </concept>
+      <concept id="1070534058343" name="jetbrains.mps.baseLanguage.structure.NullLiteral" flags="nn" index="10Nm6u" />
+      <concept id="1068431474542" name="jetbrains.mps.baseLanguage.structure.VariableDeclaration" flags="ng" index="33uBYm">
+        <child id="1068431790190" name="initializer" index="33vP2m" />
+      </concept>
+      <concept id="1068431790189" name="jetbrains.mps.baseLanguage.structure.Type" flags="in" index="33vP2l" />
+      <concept id="1068498886296" name="jetbrains.mps.baseLanguage.structure.VariableReference" flags="nn" index="37vLTw">
+        <reference id="1068581517664" name="variableDeclaration" index="3cqZAo" />
+      </concept>
+      <concept id="4972933694980447171" name="jetbrains.mps.baseLanguage.structure.BaseVariableDeclaration" flags="ng" index="19Szcq">
+        <child id="5680397130376446158" name="type" index="1tU5fm" />
+      </concept>
+      <concept id="1068580123155" name="jetbrains.mps.baseLanguage.structure.ExpressionStatement" flags="nn" index="3clFbF">
+        <child id="1068580123156" name="expression" index="3clFbG" />
+      </concept>
+      <concept id="1068580123159" name="jetbrains.mps.baseLanguage.structure.IfStatement" flags="nn" index="3clFbJ">
+        <child id="1082485599094" name="ifFalseStatement" index="9aQIa" />
+        <child id="1068580123160" name="condition" index="3clFbw" />
+        <child id="1068580123161" name="ifTrue" index="3clFbx" />
+      </concept>
+      <concept id="1068580123136" name="jetbrains.mps.baseLanguage.structure.StatementList" flags="sn" stub="5293379017992965193" index="3clFbS">
+        <child id="1068581517665" name="statement" index="3cqZAp" />
+      </concept>
+      <concept id="1068581242878" name="jetbrains.mps.baseLanguage.structure.ReturnStatement" flags="nn" index="3cpWs6">
+        <child id="1068581517676" name="expression" index="3cqZAk" />
+      </concept>
+      <concept id="1068581242864" name="jetbrains.mps.baseLanguage.structure.LocalVariableDeclarationStatement" flags="nn" index="3cpWs8">
+        <child id="1068581242865" name="localVariableDeclaration" index="3cpWs9" />
+      </concept>
+      <concept id="1068581242863" name="jetbrains.mps.baseLanguage.structure.LocalVariableDeclaration" flags="nr" index="3cpWsn" />
+      <concept id="1081516740877" name="jetbrains.mps.baseLanguage.structure.NotExpression" flags="nn" index="3fqX7Q">
+        <child id="1081516765348" name="expression" index="3fr31v" />
+      </concept>
+      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
+        <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
+      </concept>
+      <concept id="1107535904670" name="jetbrains.mps.baseLanguage.structure.ClassifierType" flags="in" index="3uibUv">
+        <reference id="1107535924139" name="classifier" index="3uigEE" />
+        <child id="1109201940907" name="parameter" index="11_B2D" />
+      </concept>
+      <concept id="1081773326031" name="jetbrains.mps.baseLanguage.structure.BinaryOperation" flags="nn" index="3uHJSO">
+        <child id="1081773367579" name="rightExpression" index="3uHU7w" />
+        <child id="1081773367580" name="leftExpression" index="3uHU7B" />
+      </concept>
+      <concept id="1073239437375" name="jetbrains.mps.baseLanguage.structure.NotEqualsExpression" flags="nn" index="3y3z36" />
+    </language>
+    <language id="d4615e3b-d671-4ba9-af01-2b78369b0ba7" name="jetbrains.mps.lang.pattern">
+      <concept id="1136720037777" name="jetbrains.mps.lang.pattern.structure.PatternExpression" flags="in" index="2DMOqp">
+        <child id="9046399079000773837" name="pattern" index="HM535" />
+      </concept>
+      <concept id="1136720037779" name="jetbrains.mps.lang.pattern.structure.PatternVariableDeclaration" flags="ng" index="2DMOqr">
+        <property id="1136720037780" name="varName" index="2DMOqs" />
+      </concept>
+      <concept id="1137418540378" name="jetbrains.mps.lang.pattern.structure.LinkPatternVariableDeclaration" flags="ng" index="3jrphi">
+        <property id="1137418571428" name="varName" index="3jrwYG" />
+      </concept>
+    </language>
+    <language id="e89e1550-b8fe-4f0d-a7fd-487968b42405" name="com.mbeddr.mpsutil.collections">
+      <concept id="6355510489488665234" name="com.mbeddr.mpsutil.collections.structure.SNodeSetType" flags="ig" index="1s3Imc">
+        <reference id="1145383142433" name="elementConcept" index="2I9WkF" />
+      </concept>
+    </language>
+    <language id="3a13115c-633c-4c5c-bbcc-75c4219e9555" name="jetbrains.mps.lang.quotation">
+      <concept id="1196350785110" name="jetbrains.mps.lang.quotation.structure.AbstractAntiquotation" flags="ng" index="2c44t0">
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+                  <node concept="3TrEf2" id="4JmsWjDRif4" role="2OqNvi">
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+                    <ref role="3Tt5mk" to="i2rk:gEI9Wgx" resolve="elementConcept" />
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+                </node>
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+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="1YaCAy" id="2z6Ep1mP268" role="1YuTPh">
+      <property role="TrG5h" value="setType" />
+      <ref role="1YaFvo" to="tp2q:hQhMVNg" resolve="SetType" />
+    </node>
+  </node>
+</model>
+
diff --git a/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/com.mbeddr.mpsutil.collections.runtime.msd b/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/com.mbeddr.mpsutil.collections.runtime.msd
new file mode 100644
index 00000000000..d32841e6fa3
--- /dev/null
+++ b/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/com.mbeddr.mpsutil.collections.runtime.msd
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<solution name="com.mbeddr.mpsutil.collections.runtime" uuid="3f2dbc2e-ad41-470f-b5f1-2869513d2b58" moduleVersion="0" compileInMPS="true">
+  <models>
+    <modelRoot type="default" contentPath="${module}">
+      <sourceRoot location="models" />
+    </modelRoot>
+  </models>
+  <facets>
+    <facet compile="mps" classes="mps" ext="no" type="java">
+      <classes generated="true" path="${module}/classes_gen" />
+    </facet>
+  </facets>
+  <sourcePath />
+  <dependencies>
+    <dependency reexport="false">8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)</dependency>
+    <dependency reexport="false">6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)</dependency>
+    <dependency reexport="false">498d89d2-c2e9-11e2-ad49-6cf049e62fe5(MPS.IDEA)</dependency>
+    <dependency reexport="true">ecfb9949-7433-4db5-85de-0f84d172e4ce(de.q60.mps.collections.libs)</dependency>
+    <dependency reexport="false">6ed54515-acc8-4d1e-a16c-9fd6cfe951ea(MPS.Core)</dependency>
+    <dependency reexport="false">c6420b75-4569-420d-aaf7-9bc590ad7b2a(com.mbeddr.mpsutil.comparator)</dependency>
+    <dependency reexport="false">9a4afe51-f114-4595-b5df-048ce3c596be(jetbrains.mps.runtime)</dependency>
+    <dependency reexport="false">f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)</dependency>
+  </dependencies>
+  <languageVersions>
+    <language slang="l:e89e1550-b8fe-4f0d-a7fd-487968b42405:com.mbeddr.mpsutil.collections" version="0" />
+    <language slang="l:f3061a53-9226-4cc5-a443-f952ceaf5816:jetbrains.mps.baseLanguage" version="12" />
+    <language slang="l:fd392034-7849-419d-9071-12563d152375:jetbrains.mps.baseLanguage.closures" version="0" />
+    <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="1" />
+    <language slang="l:acfc188d-d5d6-4598-b370-6f4a983f05b2:jetbrains.mps.baseLanguage.methodReferences" version="0" />
+    <language slang="l:ceab5195-25ea-4f22-9b92-103b95ca8c0c:jetbrains.mps.lang.core" version="2" />
+    <language slang="l:446c26eb-2b7b-4bf0-9b35-f83fa582753e:jetbrains.mps.lang.modelapi" version="0" />
+    <language slang="l:7866978e-a0f0-4cc7-81bc-4d213d9375e1:jetbrains.mps.lang.smodel" version="19" />
+    <language slang="l:9ded098b-ad6a-4657-bfd9-48636cfe8bc3:jetbrains.mps.lang.traceable" version="0" />
+  </languageVersions>
+  <dependencyVersions>
+    <module reference="3f233e7f-b8a6-46d2-a57f-795d56775243(Annotations)" version="0" />
+    <module reference="6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)" version="0" />
+    <module reference="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea(MPS.Core)" version="0" />
+    <module reference="498d89d2-c2e9-11e2-ad49-6cf049e62fe5(MPS.IDEA)" version="0" />
+    <module reference="8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)" version="0" />
+    <module reference="3f2dbc2e-ad41-470f-b5f1-2869513d2b58(com.mbeddr.mpsutil.collections.runtime)" version="0" />
+    <module reference="c6420b75-4569-420d-aaf7-9bc590ad7b2a(com.mbeddr.mpsutil.comparator)" version="0" />
+    <module reference="ecfb9949-7433-4db5-85de-0f84d172e4ce(de.q60.mps.collections.libs)" version="0" />
+    <module reference="f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)" version="0" />
+    <module reference="e39e4a59-8cb6-498e-860e-8fa8361c0d90(jetbrains.mps.baseLanguage.scopes)" version="0" />
+    <module reference="2d3c70e9-aab2-4870-8d8d-6036800e4103(jetbrains.mps.kernel)" version="0" />
+    <module reference="ceab5195-25ea-4f22-9b92-103b95ca8c0c(jetbrains.mps.lang.core)" version="0" />
+    <module reference="9ded098b-ad6a-4657-bfd9-48636cfe8bc3(jetbrains.mps.lang.traceable)" version="0" />
+    <module reference="9a4afe51-f114-4595-b5df-048ce3c596be(jetbrains.mps.runtime)" version="0" />
+  </dependencyVersions>
+</solution>
+
diff --git a/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/models/com.mbeddr.mpsutil.collections.runtime.mps b/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/models/com.mbeddr.mpsutil.collections.runtime.mps
new file mode 100644
index 00000000000..657df38a187
--- /dev/null
+++ b/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/models/com.mbeddr.mpsutil.collections.runtime.mps
@@ -0,0 +1,1440 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:240d60dc-7568-46d8-a080-a0889db7fd44(com.mbeddr.mpsutil.collections.runtime)">
+  <persistence version="9" />
+  <languages>
+    <use id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage" version="12" />
+    <use id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel" version="19" />
+    <use id="acfc188d-d5d6-4598-b370-6f4a983f05b2" name="jetbrains.mps.baseLanguage.methodReferences" version="0" />
+    <use id="83888646-71ce-4f1c-9c53-c54016f6ad4f" name="jetbrains.mps.baseLanguage.collections" version="1" />
+    <use id="fd392034-7849-419d-9071-12563d152375" name="jetbrains.mps.baseLanguage.closures" version="0" />
+    <use id="e89e1550-b8fe-4f0d-a7fd-487968b42405" name="com.mbeddr.mpsutil.collections" version="0" />
+  </languages>
+  <imports>
+    <import index="c17a" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.language(MPS.OpenAPI/)" />
+    <import index="33ny" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.util(JDK/)" />
+    <import index="e8no" ref="498d89d2-c2e9-11e2-ad49-6cf049e62fe5/java:com.intellij.util.containers(MPS.IDEA/)" />
+    <import index="gyfg" ref="ecfb9949-7433-4db5-85de-0f84d172e4ce/java:com.google.common.base(de.q60.mps.collections.libs/)" />
+    <import index="mhbf" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.model(MPS.OpenAPI/)" />
+    <import index="w1kc" ref="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea/java:jetbrains.mps.smodel(MPS.Core/)" />
+    <import index="mqum" ref="r:ec874b45-e888-42e6-995a-a298cefdff55(com.mbeddr.mpsutil.comparator.code)" />
+    <import index="lui2" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.module(MPS.OpenAPI/)" />
+    <import index="wyt6" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.lang(JDK/)" />
+    <import index="i8bi" ref="r:c3548bac-30eb-4a2a-937c-0111d5697309(jetbrains.mps.lang.smodel.generator.smodelAdapter)" />
+    <import index="1ctc" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.util.stream(JDK/)" />
+    <import index="guwi" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.io(JDK/)" />
+    <import index="tpee" ref="r:00000000-0000-4000-0000-011c895902ca(jetbrains.mps.baseLanguage.structure)" />
+  </imports>
+  <registry>
+    <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
+      <concept id="1215693861676" name="jetbrains.mps.baseLanguage.structure.BaseAssignmentExpression" flags="nn" index="d038R">
+        <child id="1068498886297" name="rValue" index="37vLTx" />
+        <child id="1068498886295" name="lValue" index="37vLTJ" />
+      </concept>
+      <concept id="1202948039474" name="jetbrains.mps.baseLanguage.structure.InstanceMethodCallOperation" flags="nn" index="liA8E" />
+      <concept id="1465982738277781862" name="jetbrains.mps.baseLanguage.structure.PlaceholderMember" flags="nn" index="2tJIrI" />
+      <concept id="1188207840427" name="jetbrains.mps.baseLanguage.structure.AnnotationInstance" flags="nn" index="2AHcQZ">
+        <reference id="1188208074048" name="annotation" index="2AI5Lk" />
+      </concept>
+      <concept id="1188208481402" name="jetbrains.mps.baseLanguage.structure.HasAnnotation" flags="ng" index="2AJDlI">
+        <child id="1188208488637" name="annotation" index="2AJF6D" />
+      </concept>
+      <concept id="2820489544401957797" name="jetbrains.mps.baseLanguage.structure.DefaultClassCreator" flags="nn" index="HV5vD">
+        <reference id="2820489544401957798" name="classifier" index="HV5vE" />
+      </concept>
+      <concept id="1154032098014" name="jetbrains.mps.baseLanguage.structure.AbstractLoopStatement" flags="nn" index="2LF5Ji">
+        <child id="1154032183016" name="body" index="2LFqv$" />
+      </concept>
+      <concept id="1197027756228" name="jetbrains.mps.baseLanguage.structure.DotExpression" flags="nn" index="2OqwBi">
+        <child id="1197027771414" name="operand" index="2Oq$k0" />
+        <child id="1197027833540" name="operation" index="2OqNvi" />
+      </concept>
+      <concept id="1197029447546" name="jetbrains.mps.baseLanguage.structure.FieldReferenceOperation" flags="nn" index="2OwXpG">
+        <reference id="1197029500499" name="fieldDeclaration" index="2Oxat5" />
+      </concept>
+      <concept id="5763944538902644732" name="jetbrains.mps.baseLanguage.structure.StaticMethodCallOperation" flags="ng" index="2PDubS" />
+      <concept id="1145552977093" name="jetbrains.mps.baseLanguage.structure.GenericNewExpression" flags="nn" index="2ShNRf">
+        <child id="1145553007750" name="creator" index="2ShVmc" />
+      </concept>
+      <concept id="1070462154015" name="jetbrains.mps.baseLanguage.structure.StaticFieldDeclaration" flags="ig" index="Wx3nA" />
+      <concept id="1070475354124" name="jetbrains.mps.baseLanguage.structure.ThisExpression" flags="nn" index="Xjq3P" />
+      <concept id="1070475587102" name="jetbrains.mps.baseLanguage.structure.SuperConstructorInvocation" flags="nn" index="XkiVB" />
+      <concept id="1081236700937" name="jetbrains.mps.baseLanguage.structure.StaticMethodCall" flags="nn" index="2YIFZM">
+        <reference id="1144433194310" name="classConcept" index="1Pybhc" />
+      </concept>
+      <concept id="1070533707846" name="jetbrains.mps.baseLanguage.structure.StaticFieldReference" flags="nn" index="10M0yZ">
+        <reference id="1144433057691" name="classifier" index="1PxDUh" />
+      </concept>
+      <concept id="1070534058343" name="jetbrains.mps.baseLanguage.structure.NullLiteral" flags="nn" index="10Nm6u" />
+      <concept id="1070534370425" name="jetbrains.mps.baseLanguage.structure.IntegerType" flags="in" index="10Oyi0" />
+      <concept id="1070534644030" name="jetbrains.mps.baseLanguage.structure.BooleanType" flags="in" index="10P_77" />
+      <concept id="1070534760951" name="jetbrains.mps.baseLanguage.structure.ArrayType" flags="in" index="10Q1$e">
+        <child id="1070534760952" name="componentType" index="10Q1$1" />
+      </concept>
+      <concept id="1070534934090" name="jetbrains.mps.baseLanguage.structure.CastExpression" flags="nn" index="10QFUN">
+        <child id="1070534934091" name="type" index="10QFUM" />
+        <child id="1070534934092" name="expression" index="10QFUP" />
+      </concept>
+      <concept id="1068390468200" name="jetbrains.mps.baseLanguage.structure.FieldDeclaration" flags="ig" index="312cEg" />
+      <concept id="1068390468198" name="jetbrains.mps.baseLanguage.structure.ClassConcept" flags="ig" index="312cEu">
+        <property id="1221565133444" name="isFinal" index="1EXbeo" />
+        <child id="1095933932569" name="implementedInterface" index="EKbjA" />
+        <child id="1165602531693" name="superclass" index="1zkMxy" />
+      </concept>
+      <concept id="1068431474542" name="jetbrains.mps.baseLanguage.structure.VariableDeclaration" flags="ng" index="33uBYm">
+        <property id="1176718929932" name="isFinal" index="3TUv4t" />
+        <child id="1068431790190" name="initializer" index="33vP2m" />
+      </concept>
+      <concept id="1513279640923991009" name="jetbrains.mps.baseLanguage.structure.IGenericClassCreator" flags="ng" index="366HgL">
+        <property id="1513279640906337053" name="inferTypeParams" index="373rjd" />
+      </concept>
+      <concept id="1109279763828" name="jetbrains.mps.baseLanguage.structure.TypeVariableDeclaration" flags="ng" index="16euLQ" />
+      <concept id="1109279851642" name="jetbrains.mps.baseLanguage.structure.GenericDeclaration" flags="ng" index="16eOlS">
+        <child id="1109279881614" name="typeVariableDeclaration" index="16eVyc" />
+      </concept>
+      <concept id="1109283449304" name="jetbrains.mps.baseLanguage.structure.TypeVariableReference" flags="in" index="16syzq">
+        <reference id="1109283546497" name="typeVariableDeclaration" index="16sUi3" />
+      </concept>
+      <concept id="1092119917967" name="jetbrains.mps.baseLanguage.structure.MulExpression" flags="nn" index="17qRlL" />
+      <concept id="1068498886296" name="jetbrains.mps.baseLanguage.structure.VariableReference" flags="nn" index="37vLTw">
+        <reference id="1068581517664" name="variableDeclaration" index="3cqZAo" />
+      </concept>
+      <concept id="1068498886292" name="jetbrains.mps.baseLanguage.structure.ParameterDeclaration" flags="ir" index="37vLTG" />
+      <concept id="1068498886294" name="jetbrains.mps.baseLanguage.structure.AssignmentExpression" flags="nn" index="37vLTI" />
+      <concept id="4972933694980447171" name="jetbrains.mps.baseLanguage.structure.BaseVariableDeclaration" flags="ng" index="19Szcq">
+        <child id="5680397130376446158" name="type" index="1tU5fm" />
+      </concept>
+      <concept id="1068580123132" name="jetbrains.mps.baseLanguage.structure.BaseMethodDeclaration" flags="ng" index="3clF44">
+        <child id="1068580123133" name="returnType" index="3clF45" />
+        <child id="1068580123134" name="parameter" index="3clF46" />
+        <child id="1068580123135" name="body" index="3clF47" />
+      </concept>
+      <concept id="1068580123165" name="jetbrains.mps.baseLanguage.structure.InstanceMethodDeclaration" flags="ig" index="3clFb_" />
+      <concept id="1068580123155" name="jetbrains.mps.baseLanguage.structure.ExpressionStatement" flags="nn" index="3clFbF">
+        <child id="1068580123156" name="expression" index="3clFbG" />
+      </concept>
+      <concept id="1068580123157" name="jetbrains.mps.baseLanguage.structure.Statement" flags="nn" index="3clFbH" />
+      <concept id="1068580123159" name="jetbrains.mps.baseLanguage.structure.IfStatement" flags="nn" index="3clFbJ">
+        <child id="1068580123160" name="condition" index="3clFbw" />
+        <child id="1068580123161" name="ifTrue" index="3clFbx" />
+      </concept>
+      <concept id="1068580123136" name="jetbrains.mps.baseLanguage.structure.StatementList" flags="sn" stub="5293379017992965193" index="3clFbS">
+        <child id="1068581517665" name="statement" index="3cqZAp" />
+      </concept>
+      <concept id="1068580123137" name="jetbrains.mps.baseLanguage.structure.BooleanConstant" flags="nn" index="3clFbT">
+        <property id="1068580123138" name="value" index="3clFbU" />
+      </concept>
+      <concept id="1068580123140" name="jetbrains.mps.baseLanguage.structure.ConstructorDeclaration" flags="ig" index="3clFbW" />
+      <concept id="1068580320020" name="jetbrains.mps.baseLanguage.structure.IntegerConstant" flags="nn" index="3cmrfG">
+        <property id="1068580320021" name="value" index="3cmrfH" />
+      </concept>
+      <concept id="1068581242875" name="jetbrains.mps.baseLanguage.structure.PlusExpression" flags="nn" index="3cpWs3" />
+      <concept id="1068581242878" name="jetbrains.mps.baseLanguage.structure.ReturnStatement" flags="nn" index="3cpWs6">
+        <child id="1068581517676" name="expression" index="3cqZAk" />
+      </concept>
+      <concept id="1068581242864" name="jetbrains.mps.baseLanguage.structure.LocalVariableDeclarationStatement" flags="nn" index="3cpWs8">
+        <child id="1068581242865" name="localVariableDeclaration" index="3cpWs9" />
+      </concept>
+      <concept id="1068581242867" name="jetbrains.mps.baseLanguage.structure.LongType" flags="in" index="3cpWsb" />
+      <concept id="1068581242863" name="jetbrains.mps.baseLanguage.structure.LocalVariableDeclaration" flags="nr" index="3cpWsn" />
+      <concept id="1068581517677" name="jetbrains.mps.baseLanguage.structure.VoidType" flags="in" index="3cqZAl" />
+      <concept id="1079359253375" name="jetbrains.mps.baseLanguage.structure.ParenthesizedExpression" flags="nn" index="1eOMI4">
+        <child id="1079359253376" name="expression" index="1eOMHV" />
+      </concept>
+      <concept id="1081516740877" name="jetbrains.mps.baseLanguage.structure.NotExpression" flags="nn" index="3fqX7Q">
+        <child id="1081516765348" name="expression" index="3fr31v" />
+      </concept>
+      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
+        <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
+        <child id="1068499141038" name="actualArgument" index="37wK5m" />
+        <child id="4972241301747169160" name="typeArgument" index="3PaCim" />
+      </concept>
+      <concept id="1107461130800" name="jetbrains.mps.baseLanguage.structure.Classifier" flags="ng" index="3pOWGL">
+        <property id="521412098689998745" name="nonStatic" index="2bfB8j" />
+        <child id="5375687026011219971" name="member" index="jymVt" unordered="true" />
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+      <concept id="1171903607971" name="jetbrains.mps.baseLanguage.structure.WildCardType" flags="in" index="3qTvmN" />
+      <concept id="1171903916106" name="jetbrains.mps.baseLanguage.structure.UpperBoundType" flags="in" index="3qUE_q">
+        <child id="1171903916107" name="bound" index="3qUE_r" />
+      </concept>
+      <concept id="7812454656619025412" name="jetbrains.mps.baseLanguage.structure.LocalMethodCall" flags="nn" index="1rXfSq" />
+      <concept id="1107535904670" name="jetbrains.mps.baseLanguage.structure.ClassifierType" flags="in" index="3uibUv">
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+        <child id="1109201940907" name="parameter" index="11_B2D" />
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+        <child id="1081773367579" name="rightExpression" index="3uHU7w" />
+        <child id="1081773367580" name="leftExpression" index="3uHU7B" />
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+      <concept id="1073239437375" name="jetbrains.mps.baseLanguage.structure.NotEqualsExpression" flags="nn" index="3y3z36" />
+      <concept id="1178549954367" name="jetbrains.mps.baseLanguage.structure.IVisible" flags="ng" index="1B3ioH">
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+      <concept id="1144226303539" name="jetbrains.mps.baseLanguage.structure.ForeachStatement" flags="nn" index="1DcWWT">
+        <child id="1144226360166" name="iterable" index="1DdaDG" />
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+            <node concept="37vLTw" id="6WJM9CJzW7p" role="2Oq$k0">
+              <ref role="3cqZAo" node="6WJM9CJzRRk" resolve="o" />
+            </node>
+            <node concept="liA8E" id="6WJM9CJzY$Y" role="2OqNvi">
+              <ref role="37wK5l" to="wyt6:~Object.hashCode()" resolve="hashCode" />
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="3Tmbuc" id="6WJM9CJzRRp" role="1B3o_S" />
+      <node concept="10Oyi0" id="6WJM9CJzRRq" role="3clF45" />
+    </node>
+    <node concept="2tJIrI" id="6WJM9CJ$sU0" role="jymVt" />
+    <node concept="Wx3nA" id="6WJM9CJzRR2" role="jymVt">
+      <property role="TrG5h" value="serialVersionUID" />
+      <property role="3TUv4t" value="true" />
+      <node concept="3cpWsb" id="6WJM9CJzRR3" role="1tU5fm" />
+      <node concept="3cmrfG" id="6WJM9CJzRR4" role="33vP2m">
+        <property role="3cmrfH" value="1" />
+      </node>
+      <node concept="3Tm6S6" id="6WJM9CJzRR5" role="1B3o_S" />
+    </node>
+    <node concept="3Tm1VV" id="6WJM9CJ$6Dy" role="1B3o_S" />
+    <node concept="16euLQ" id="6WJM9CJ$t6r" role="16eVyc">
+      <property role="TrG5h" value="T" />
+    </node>
+  </node>
+  <node concept="312cEu" id="2UDGRNXwY3K">
+    <property role="TrG5h" value="NodeHashSet" />
+    <node concept="3Tm1VV" id="2UDGRNXwY3L" role="1B3o_S" />
+    <node concept="3uibUv" id="2UDGRNXwYar" role="1zkMxy">
+      <ref role="3uigEE" node="5wNjLS4lSKq" resolve="EquivalenceHashSet" />
+      <node concept="3Tqbb2" id="2UDGRNXx5xC" role="11_B2D" />
+    </node>
+    <node concept="3clFbW" id="2UDGRNXx5Xp" role="jymVt">
+      <node concept="3cqZAl" id="2UDGRNXx5Xq" role="3clF45" />
+      <node concept="3Tm1VV" id="2UDGRNXx5Xx" role="1B3o_S" />
+      <node concept="3clFbS" id="2UDGRNXx5Xy" role="3clF47">
+        <node concept="XkiVB" id="2UDGRNXx5Xz" role="3cqZAp">
+          <ref role="37wK5l" node="6WJM9CJyjjM" resolve="EquivalenceHashSet" />
+          <node concept="2ShNRf" id="68F0OxkeEQ2" role="37wK5m">
+            <node concept="HV5vD" id="13oTmDl_hOS" role="2ShVmc">
+              <property role="373rjd" value="true" />
+              <ref role="HV5vE" node="68F0OxjVEW9" resolve="NodeEquivalence" />
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="2tJIrI" id="2UDGRNXxug3" role="jymVt" />
+    <node concept="3clFbW" id="2UDGRNXxxvO" role="jymVt">
+      <node concept="3cqZAl" id="2UDGRNXxxvP" role="3clF45" />
+      <node concept="37vLTG" id="2UDGRNXxxvQ" role="3clF46">
+        <property role="TrG5h" value="set" />
+        <node concept="3uibUv" id="2UDGRNXxxvR" role="1tU5fm">
+          <ref role="3uigEE" to="33ny:~Set" resolve="Set" />
+        </node>
+      </node>
+      <node concept="3clFbS" id="2UDGRNXxxvV" role="3clF47">
+        <node concept="XkiVB" id="2UDGRNXx_PA" role="3cqZAp">
+          <ref role="37wK5l" node="5wNjLS4qFj3" resolve="EquivalenceHashSet" />
+          <node concept="37vLTw" id="2UDGRNXxFBw" role="37wK5m">
+            <ref role="3cqZAo" node="2UDGRNXxxvQ" resolve="set" />
+          </node>
+          <node concept="2ShNRf" id="2UDGRNXxFFV" role="37wK5m">
+            <node concept="HV5vD" id="2UDGRNXxFFW" role="2ShVmc">
+              <property role="373rjd" value="true" />
+              <ref role="HV5vE" node="68F0OxjVEW9" resolve="NodeEquivalence" />
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="3Tm1VV" id="2UDGRNXxxw8" role="1B3o_S" />
+    </node>
+    <node concept="2tJIrI" id="2UDGRNXxxvu" role="jymVt" />
+  </node>
+</model>
+
diff --git a/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps b/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps
new file mode 100644
index 00000000000..7e5086cc54f
--- /dev/null
+++ b/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps
@@ -0,0 +1,3968 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:6fb7db1c-1859-474b-8d33-1e840624caa8(test.com.mbeddr.mpsutil.collections.runtime)">
+  <persistence version="9" />
+  <languages>
+    <use id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel" version="19" />
+    <use id="8585453e-6bfb-4d80-98de-b16074f1d86c" name="jetbrains.mps.lang.test" version="6" />
+    <use id="83888646-71ce-4f1c-9c53-c54016f6ad4f" name="jetbrains.mps.baseLanguage.collections" version="1" />
+    <use id="446c26eb-2b7b-4bf0-9b35-f83fa582753e" name="jetbrains.mps.lang.modelapi" version="0" />
+    <use id="3a13115c-633c-4c5c-bbcc-75c4219e9555" name="jetbrains.mps.lang.quotation" version="5" />
+    <use id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage" version="12" />
+    <use id="f61473f9-130f-42f6-b98d-6c438812c2f6" name="jetbrains.mps.baseLanguage.unitTest" version="1" />
+    <use id="e89e1550-b8fe-4f0d-a7fd-487968b42405" name="com.mbeddr.mpsutil.collections" version="0" />
+  </languages>
+  <imports>
+    <import index="lui2" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.module(MPS.OpenAPI/)" />
+    <import index="gyfg" ref="ecfb9949-7433-4db5-85de-0f84d172e4ce/java:com.google.common.base(de.q60.mps.collections.libs/)" />
+    <import index="tpck" ref="r:00000000-0000-4000-0000-011c89590288(jetbrains.mps.lang.core.structure)" />
+    <import index="mhbf" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.model(MPS.OpenAPI/)" />
+    <import index="tpee" ref="r:00000000-0000-4000-0000-011c895902ca(jetbrains.mps.baseLanguage.structure)" />
+    <import index="co" ref="r:240d60dc-7568-46d8-a080-a0889db7fd44(com.mbeddr.mpsutil.collections.runtime)" />
+    <import index="w1kc" ref="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea/java:jetbrains.mps.smodel(MPS.Core/)" />
+    <import index="tp5g" ref="r:00000000-0000-4000-0000-011c89590388(jetbrains.mps.lang.test.structure)" />
+    <import index="tpeh" ref="r:00000000-0000-4000-0000-011c895902c5(jetbrains.mps.baseLanguage.typesystem)" />
+    <import index="tp2v" ref="r:00000000-0000-4000-0000-011c8959032b(jetbrains.mps.baseLanguage.collections.typesystem)" />
+    <import index="wwkp" ref="r:98449c2c-1cb6-4e11-8e93-d22a8497c2fe(com.mbeddr.mpsutil.collections.typesystem)" />
+    <import index="33ny" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.util(JDK/)" implicit="true" />
+  </imports>
+  <registry>
+    <language id="8585453e-6bfb-4d80-98de-b16074f1d86c" name="jetbrains.mps.lang.test">
+      <concept id="1215603922101" name="jetbrains.mps.lang.test.structure.NodeOperationsContainer" flags="ng" index="7CXmI">
+        <child id="1215604436604" name="nodeOperations" index="7EUXB" />
+      </concept>
+      <concept id="1215607067978" name="jetbrains.mps.lang.test.structure.CheckNodeForErrorMessagesOperation" flags="ng" index="7OXhh">
+        <property id="3743352646565420194" name="includeSelf" index="GvXf4" />
+      </concept>
+      <concept id="7691029917083872157" name="jetbrains.mps.lang.test.structure.IRuleReference" flags="ng" index="2u4UPC">
+        <reference id="8333855927540250453" name="declaration" index="39XzEq" />
+      </concept>
+      <concept id="428590876651279930" name="jetbrains.mps.lang.test.structure.NodeTypeSystemErrorCheckOperation" flags="ng" index="2DdRWr">
+        <child id="4649457259824818099" name="equationRef" index="MJxsd" />
+      </concept>
+      <concept id="4649457259824807647" name="jetbrains.mps.lang.test.structure.TypesystemEquationReference" flags="ng" index="MGsTx" />
+      <concept id="5097124989038916362" name="jetbrains.mps.lang.test.structure.TestInfo" flags="ng" index="2XOHcx">
+        <property id="5097124989038916363" name="projectPath" index="2XOHcw" />
+      </concept>
+      <concept id="1225469856668" name="jetbrains.mps.lang.test.structure.ModelExpression" flags="nn" index="1jGwE1" />
+      <concept id="1216913645126" name="jetbrains.mps.lang.test.structure.NodesTestCase" flags="lg" index="1lH9Xt">
+        <property id="2616911529524314943" name="accessMode" index="3DII0k" />
+        <child id="1216993439383" name="methods" index="1qtyYc" />
+        <child id="1217501822150" name="nodesToCheck" index="1SKRRt" />
+        <child id="1217501895093" name="testMethods" index="1SL9yI" />
+      </concept>
+      <concept id="1216989428737" name="jetbrains.mps.lang.test.structure.TestNode" flags="ng" index="1qefOq">
+        <child id="1216989461394" name="nodeToCheck" index="1qenE9" />
+      </concept>
+      <concept id="1225978065297" name="jetbrains.mps.lang.test.structure.SimpleNodeTest" flags="ng" index="1LZb2c" />
+    </language>
+    <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
+      <concept id="1082485599095" name="jetbrains.mps.baseLanguage.structure.BlockStatement" flags="nn" index="9aQIb">
+        <child id="1082485599096" name="statements" index="9aQI4" />
+      </concept>
+      <concept id="1202948039474" name="jetbrains.mps.baseLanguage.structure.InstanceMethodCallOperation" flags="nn" index="liA8E" />
+      <concept id="1239714755177" name="jetbrains.mps.baseLanguage.structure.AbstractUnaryNumberOperation" flags="nn" index="2$Kvd9">
+        <child id="1239714902950" name="expression" index="2$L3a6" />
+      </concept>
+      <concept id="2820489544401957797" name="jetbrains.mps.baseLanguage.structure.DefaultClassCreator" flags="nn" index="HV5vD">
+        <reference id="2820489544401957798" name="classifier" index="HV5vE" />
+      </concept>
+      <concept id="1154032098014" name="jetbrains.mps.baseLanguage.structure.AbstractLoopStatement" flags="nn" index="2LF5Ji">
+        <child id="1154032183016" name="body" index="2LFqv$" />
+      </concept>
+      <concept id="1197027756228" name="jetbrains.mps.baseLanguage.structure.DotExpression" flags="nn" index="2OqwBi">
+        <child id="1197027771414" name="operand" index="2Oq$k0" />
+        <child id="1197027833540" name="operation" index="2OqNvi" />
+      </concept>
+      <concept id="1145552977093" name="jetbrains.mps.baseLanguage.structure.GenericNewExpression" flags="nn" index="2ShNRf">
+        <child id="1145553007750" name="creator" index="2ShVmc" />
+      </concept>
+      <concept id="1070475926800" name="jetbrains.mps.baseLanguage.structure.StringLiteral" flags="nn" index="Xl_RD">
+        <property id="1070475926801" name="value" index="Xl_RC" />
+      </concept>
+      <concept id="1070534058343" name="jetbrains.mps.baseLanguage.structure.NullLiteral" flags="nn" index="10Nm6u" />
+      <concept id="1070534370425" name="jetbrains.mps.baseLanguage.structure.IntegerType" flags="in" index="10Oyi0" />
+      <concept id="1068431474542" name="jetbrains.mps.baseLanguage.structure.VariableDeclaration" flags="ng" index="33uBYm">
+        <child id="1068431790190" name="initializer" index="33vP2m" />
+      </concept>
+      <concept id="1513279640923991009" name="jetbrains.mps.baseLanguage.structure.IGenericClassCreator" flags="ng" index="366HgL">
+        <property id="1513279640906337053" name="inferTypeParams" index="373rjd" />
+      </concept>
+      <concept id="1068498886296" name="jetbrains.mps.baseLanguage.structure.VariableReference" flags="nn" index="37vLTw">
+        <reference id="1068581517664" name="variableDeclaration" index="3cqZAo" />
+      </concept>
+      <concept id="1068498886292" name="jetbrains.mps.baseLanguage.structure.ParameterDeclaration" flags="ir" index="37vLTG" />
+      <concept id="1225271177708" name="jetbrains.mps.baseLanguage.structure.StringType" flags="in" index="17QB3L" />
+      <concept id="1225271283259" name="jetbrains.mps.baseLanguage.structure.NPEEqualsExpression" flags="nn" index="17R0WA" />
+      <concept id="4972933694980447171" name="jetbrains.mps.baseLanguage.structure.BaseVariableDeclaration" flags="ng" index="19Szcq">
+        <child id="5680397130376446158" name="type" index="1tU5fm" />
+      </concept>
+      <concept id="1068580123132" name="jetbrains.mps.baseLanguage.structure.BaseMethodDeclaration" flags="ng" index="3clF44">
+        <child id="1068580123133" name="returnType" index="3clF45" />
+        <child id="1068580123134" name="parameter" index="3clF46" />
+        <child id="1068580123135" name="body" index="3clF47" />
+      </concept>
+      <concept id="1068580123155" name="jetbrains.mps.baseLanguage.structure.ExpressionStatement" flags="nn" index="3clFbF">
+        <child id="1068580123156" name="expression" index="3clFbG" />
+      </concept>
+      <concept id="1068580123157" name="jetbrains.mps.baseLanguage.structure.Statement" flags="nn" index="3clFbH" />
+      <concept id="1068580123136" name="jetbrains.mps.baseLanguage.structure.StatementList" flags="sn" stub="5293379017992965193" index="3clFbS">
+        <child id="1068581517665" name="statement" index="3cqZAp" />
+      </concept>
+      <concept id="1068580320020" name="jetbrains.mps.baseLanguage.structure.IntegerConstant" flags="nn" index="3cmrfG">
+        <property id="1068580320021" name="value" index="3cmrfH" />
+      </concept>
+      <concept id="1068581242864" name="jetbrains.mps.baseLanguage.structure.LocalVariableDeclarationStatement" flags="nn" index="3cpWs8">
+        <child id="1068581242865" name="localVariableDeclaration" index="3cpWs9" />
+      </concept>
+      <concept id="1068581242863" name="jetbrains.mps.baseLanguage.structure.LocalVariableDeclaration" flags="nr" index="3cpWsn" />
+      <concept id="1068581517677" name="jetbrains.mps.baseLanguage.structure.VoidType" flags="in" index="3cqZAl" />
+      <concept id="1081506773034" name="jetbrains.mps.baseLanguage.structure.LessThanExpression" flags="nn" index="3eOVzh" />
+      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
+        <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
+        <child id="1068499141038" name="actualArgument" index="37wK5m" />
+      </concept>
+      <concept id="1212685548494" name="jetbrains.mps.baseLanguage.structure.ClassCreator" flags="nn" index="1pGfFk" />
+      <concept id="1107535904670" name="jetbrains.mps.baseLanguage.structure.ClassifierType" flags="in" index="3uibUv">
+        <reference id="1107535924139" name="classifier" index="3uigEE" />
+      </concept>
+      <concept id="1081773326031" name="jetbrains.mps.baseLanguage.structure.BinaryOperation" flags="nn" index="3uHJSO">
+        <child id="1081773367579" name="rightExpression" index="3uHU7w" />
+        <child id="1081773367580" name="leftExpression" index="3uHU7B" />
+      </concept>
+      <concept id="1214918800624" name="jetbrains.mps.baseLanguage.structure.PostfixIncrementExpression" flags="nn" index="3uNrnE" />
+      <concept id="1144230876926" name="jetbrains.mps.baseLanguage.structure.AbstractForStatement" flags="nn" index="1DupvO">
+        <child id="1144230900587" name="variable" index="1Duv9x" />
+      </concept>
+      <concept id="1144231330558" name="jetbrains.mps.baseLanguage.structure.ForStatement" flags="nn" index="1Dw8fO">
+        <child id="1144231399730" name="condition" index="1Dwp0S" />
+        <child id="1144231408325" name="iteration" index="1Dwrff" />
+      </concept>
+      <concept id="1208890769693" name="jetbrains.mps.baseLanguage.structure.ArrayLengthOperation" flags="nn" index="1Rwk04" />
+      <concept id="6329021646629104954" name="jetbrains.mps.baseLanguage.structure.SingleLineComment" flags="nn" index="3SKdUt">
+        <child id="8356039341262087992" name="line" index="1aUNEU" />
+      </concept>
+    </language>
+    <language id="e89e1550-b8fe-4f0d-a7fd-487968b42405" name="com.mbeddr.mpsutil.collections">
+      <concept id="5464682487435020413" name="com.mbeddr.mpsutil.collections.structure.SNodeSetCreator" flags="ng" index="2y2FIT">
+        <child id="5464682487435020789" name="createdType" index="2y2FCL" />
+        <child id="5464682487435041476" name="setCreator" index="2y2Q$0" />
+      </concept>
+      <concept id="6355510489488665234" name="com.mbeddr.mpsutil.collections.structure.SNodeSetType" flags="ig" index="1s3Imc">
+        <reference id="1145383142433" name="elementConcept" index="2I9WkF" />
+      </concept>
+    </language>
+    <language id="443f4c36-fcf5-4eb6-9500-8d06ed259e3e" name="jetbrains.mps.baseLanguage.classifiers">
+      <concept id="1205752633985" name="jetbrains.mps.baseLanguage.classifiers.structure.ThisClassifierExpression" flags="nn" index="2WthIp" />
+      <concept id="1205756064662" name="jetbrains.mps.baseLanguage.classifiers.structure.IMemberOperation" flags="ng" index="2WEnae">
+        <reference id="1205756909548" name="member" index="2WH_rO" />
+      </concept>
+      <concept id="1205769003971" name="jetbrains.mps.baseLanguage.classifiers.structure.DefaultClassifierMethodDeclaration" flags="ng" index="2XrIbr" />
+      <concept id="1205769149993" name="jetbrains.mps.baseLanguage.classifiers.structure.DefaultClassifierMethodCallOperation" flags="nn" index="2XshWL">
+        <child id="1205770614681" name="actualArgument" index="2XxRq1" />
+      </concept>
+    </language>
+    <language id="3a13115c-633c-4c5c-bbcc-75c4219e9555" name="jetbrains.mps.lang.quotation">
+      <concept id="5455284157993911077" name="jetbrains.mps.lang.quotation.structure.NodeBuilderInitProperty" flags="ng" index="2pJxcG">
+        <reference id="5455284157993911078" name="property" index="2pJxcJ" />
+        <child id="1595412875168045201" name="initValue" index="28ntcv" />
+      </concept>
+      <concept id="5455284157993863837" name="jetbrains.mps.lang.quotation.structure.NodeBuilder" flags="nn" index="2pJPEk">
+        <child id="5455284157993863838" name="quotedNode" index="2pJPEn" />
+      </concept>
+      <concept id="5455284157993863840" name="jetbrains.mps.lang.quotation.structure.NodeBuilderNode" flags="nn" index="2pJPED">
+        <reference id="5455284157993910961" name="concept" index="2pJxaS" />
+        <child id="5455284157993911099" name="values" index="2pJxcM" />
+      </concept>
+      <concept id="6985522012210254362" name="jetbrains.mps.lang.quotation.structure.NodeBuilderPropertyExpression" flags="nn" index="WxPPo">
+        <child id="6985522012210254363" name="expression" index="WxPPp" />
+      </concept>
+    </language>
+    <language id="446c26eb-2b7b-4bf0-9b35-f83fa582753e" name="jetbrains.mps.lang.modelapi">
+      <concept id="4733039728785194814" name="jetbrains.mps.lang.modelapi.structure.NamedNodeReference" flags="ng" index="ZC_QK">
+        <reference id="7256306938026143658" name="target" index="2aWVGs" />
+      </concept>
+    </language>
+    <language id="f61473f9-130f-42f6-b98d-6c438812c2f6" name="jetbrains.mps.baseLanguage.unitTest">
+      <concept id="7080278351417106679" name="jetbrains.mps.baseLanguage.unitTest.structure.AssertIsNotNull" flags="nn" index="2Hmddi">
+        <child id="7080278351417106681" name="expression" index="2Hmdds" />
+      </concept>
+      <concept id="8427750732757990717" name="jetbrains.mps.baseLanguage.unitTest.structure.BinaryAssert" flags="nn" index="3tpDYu">
+        <child id="8427750732757990725" name="actual" index="3tpDZA" />
+        <child id="8427750732757990724" name="expected" index="3tpDZB" />
+      </concept>
+      <concept id="1171978097730" name="jetbrains.mps.baseLanguage.unitTest.structure.AssertEquals" flags="nn" index="3vlDli" />
+      <concept id="1171981022339" name="jetbrains.mps.baseLanguage.unitTest.structure.AssertTrue" flags="nn" index="3vwNmj">
+        <child id="1171981057159" name="condition" index="3vwVQn" />
+      </concept>
+      <concept id="1171983834376" name="jetbrains.mps.baseLanguage.unitTest.structure.AssertFalse" flags="nn" index="3vFxKo">
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+        <node concept="3cpWs8" id="4JmsWjEaqX8" role="3cqZAp">
+          <node concept="3cpWsn" id="4JmsWjEaqX9" role="3cpWs9">
+            <property role="TrG5h" value="repository" />
+            <node concept="3uibUv" id="4JmsWjEaqXa" role="1tU5fm">
+              <ref role="3uigEE" to="lui2:~SRepository" resolve="SRepository" />
+            </node>
+            <node concept="2OqwBi" id="4JmsWjEaqXb" role="33vP2m">
+              <node concept="1jGwE1" id="4JmsWjEaqXc" role="2Oq$k0" />
+              <node concept="liA8E" id="4JmsWjEaqXd" role="2OqNvi">
+                <ref role="37wK5l" to="mhbf:~SModel.getRepository()" resolve="getRepository" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="4JmsWjEaqXe" role="3cqZAp" />
+        <node concept="3cpWs8" id="4JmsWjEaqXf" role="3cqZAp">
+          <node concept="3cpWsn" id="4JmsWjEaqXg" role="3cpWs9">
+            <property role="TrG5h" value="set" />
+            <node concept="1s3Imc" id="4JmsWjEaqXh" role="1tU5fm" />
+            <node concept="2ShNRf" id="4JmsWjEaqXi" role="33vP2m">
+              <node concept="2y2FIT" id="4JmsWjEaqXj" role="2ShVmc">
+                <node concept="1s3Imc" id="4JmsWjEaqXk" role="2y2FCL">
+                  <ref role="2I9WkF" to="tpee:fz12cDA" resolve="ClassConcept" />
+                </node>
+                <node concept="2ShNRf" id="4JmsWjEaqXl" role="2y2Q$0">
+                  <node concept="32HrFt" id="4JmsWjEaqXm" role="2ShVmc">
+                    <node concept="3Tqbb2" id="4JmsWjEaqXn" role="HW$YZ">
+                      <ref role="ehGHo" to="tpee:fz12cDA" resolve="ClassConcept" />
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="4JmsWjEaqXo" role="3cqZAp" />
+        <node concept="3cpWs8" id="4JmsWjEaqXp" role="3cqZAp">
+          <node concept="3cpWsn" id="4JmsWjEaqXq" role="3cpWs9">
+            <property role="TrG5h" value="cls" />
+            <node concept="3Tqbb2" id="4JmsWjEaqXr" role="1tU5fm">
+              <ref role="ehGHo" to="tpee:fz12cDA" resolve="ClassConcept" />
+            </node>
+            <node concept="2OqwBi" id="4JmsWjEaqXs" role="33vP2m">
+              <node concept="2tJFMh" id="4JmsWjEaqXt" role="2Oq$k0">
+                <node concept="ZC_QK" id="4JmsWjEaqXu" role="2tJFKM">
+                  <ref role="2aWVGs" to="co:5wNjLS4lSKq" resolve="EquivalenceHashSet" />
+                </node>
+              </node>
+              <node concept="Vyspw" id="4JmsWjEaqXv" role="2OqNvi">
+                <node concept="37vLTw" id="4JmsWjEaqXw" role="Vysub">
+                  <ref role="3cqZAo" node="4JmsWjEaqX9" resolve="repository" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="4JmsWjEaqXx" role="3cqZAp">
+          <node concept="3cpWsn" id="4JmsWjEaqXy" role="3cpWs9">
+            <property role="TrG5h" value="other" />
+            <node concept="3Tqbb2" id="4JmsWjEaqXz" role="1tU5fm">
+              <ref role="ehGHo" to="tpee:g7pOWCK" resolve="Classifier" />
+            </node>
+            <node concept="2OqwBi" id="4JmsWjEaqX$" role="33vP2m">
+              <node concept="2tJFMh" id="4JmsWjEaqX_" role="2Oq$k0">
+                <node concept="ZC_QK" id="4JmsWjEaqXA" role="2tJFKM">
+                  <ref role="2aWVGs" to="co:68F0OxjVEW9" resolve="NodeEquivalence" />
+                </node>
+              </node>
+              <node concept="Vyspw" id="4JmsWjEaqXB" role="2OqNvi">
+                <node concept="37vLTw" id="4JmsWjEaqXC" role="Vysub">
+                  <ref role="3cqZAo" node="4JmsWjEaqX9" resolve="repository" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="4JmsWjEaqXD" role="3cqZAp" />
+        <node concept="3vlDli" id="4JmsWjEaqXE" role="3cqZAp">
+          <node concept="3cmrfG" id="4JmsWjEaqXF" role="3tpDZB">
+            <property role="3cmrfH" value="0" />
+          </node>
+          <node concept="2OqwBi" id="4JmsWjEaqXG" role="3tpDZA">
+            <node concept="37vLTw" id="4JmsWjEaqXH" role="2Oq$k0">
+              <ref role="3cqZAo" node="4JmsWjEaqXg" resolve="set" />
+            </node>
+            <node concept="34oBXx" id="4JmsWjEaqXI" role="2OqNvi" />
+          </node>
+        </node>
+        <node concept="3clFbH" id="4JmsWjEaqXJ" role="3cqZAp" />
+        <node concept="3clFbF" id="4JmsWjEaqXK" role="3cqZAp">
+          <node concept="2OqwBi" id="4JmsWjEaqXL" role="3clFbG">
+            <node concept="2WthIp" id="4JmsWjEaqXM" role="2Oq$k0" />
+            <node concept="2XshWL" id="4JmsWjEaqXN" role="2OqNvi">
+              <ref role="2WH_rO" node="4JmsWjEaqOh" resolve="addMultipleTimes" />
+              <node concept="37vLTw" id="4JmsWjEaqXO" role="2XxRq1">
+                <ref role="3cqZAo" node="4JmsWjEaqXg" resolve="set" />
+              </node>
+              <node concept="37vLTw" id="4JmsWjEaqXP" role="2XxRq1">
+                <ref role="3cqZAo" node="4JmsWjEaqXq" resolve="cls" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbF" id="4JmsWjEaqXQ" role="3cqZAp">
+          <node concept="2OqwBi" id="4JmsWjEaqXR" role="3clFbG">
+            <node concept="2WthIp" id="4JmsWjEaqXS" role="2Oq$k0" />
+            <node concept="2XshWL" id="4JmsWjEaqXT" role="2OqNvi">
+              <ref role="2WH_rO" node="4JmsWjEaqOh" resolve="addMultipleTimes" />
+              <node concept="37vLTw" id="4JmsWjEaqXU" role="2XxRq1">
+                <ref role="3cqZAo" node="4JmsWjEaqXg" resolve="set" />
+              </node>
+              <node concept="37vLTw" id="4JmsWjEaqXV" role="2XxRq1">
+                <ref role="3cqZAo" node="4JmsWjEaqXy" resolve="other" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="4JmsWjEaqXW" role="3cqZAp" />
+        <node concept="3clFbF" id="4JmsWjEaqXX" role="3cqZAp">
+          <node concept="2OqwBi" id="4JmsWjEaqXY" role="3clFbG">
+            <node concept="2WthIp" id="4JmsWjEaqXZ" role="2Oq$k0" />
+            <node concept="2XshWL" id="4JmsWjEaqY0" role="2OqNvi">
+              <ref role="2WH_rO" node="4JmsWjEaqOh" resolve="addMultipleTimes" />
+              <node concept="37vLTw" id="4JmsWjEaqY1" role="2XxRq1">
+                <ref role="3cqZAo" node="4JmsWjEaqXg" resolve="set" />
+              </node>
+              <node concept="37vLTw" id="4JmsWjEaqY2" role="2XxRq1">
+                <ref role="3cqZAo" node="4JmsWjEaqXq" resolve="cls" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbF" id="4JmsWjEaqY3" role="3cqZAp">
+          <node concept="2OqwBi" id="4JmsWjEaqY4" role="3clFbG">
+            <node concept="2WthIp" id="4JmsWjEaqY5" role="2Oq$k0" />
+            <node concept="2XshWL" id="4JmsWjEaqY6" role="2OqNvi">
+              <ref role="2WH_rO" node="4JmsWjEaqOh" resolve="addMultipleTimes" />
+              <node concept="37vLTw" id="4JmsWjEaqY7" role="2XxRq1">
+                <ref role="3cqZAo" node="4JmsWjEaqXg" resolve="set" />
+              </node>
+              <node concept="37vLTw" id="4JmsWjEaqY8" role="2XxRq1">
+                <ref role="3cqZAo" node="4JmsWjEaqXy" resolve="other" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="4JmsWjEaqY9" role="3cqZAp" />
+        <node concept="3vlDli" id="4JmsWjEaqYa" role="3cqZAp">
+          <node concept="3cmrfG" id="4JmsWjEaqYb" role="3tpDZB">
+            <property role="3cmrfH" value="2" />
+          </node>
+          <node concept="2OqwBi" id="4JmsWjEaqYc" role="3tpDZA">
+            <node concept="2OqwBi" id="4JmsWjEaqYd" role="2Oq$k0">
+              <node concept="3S9uib" id="4JmsWjEaqYe" role="2Oq$k0">
+                <node concept="37vLTw" id="4JmsWjEaqYf" role="3S9DZi">
+                  <ref role="3cqZAo" node="4JmsWjEaqXg" resolve="set" />
+                </node>
+              </node>
+              <node concept="liA8E" id="4JmsWjEaqYg" role="2OqNvi">
+                <ref role="37wK5l" to="33ny:~Set.toArray()" resolve="toArray" />
+              </node>
+            </node>
+            <node concept="1Rwk04" id="4JmsWjEaqYh" role="2OqNvi" />
+          </node>
+        </node>
+      </node>
+    </node>
+  </node>
+</model>
+
diff --git a/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/test.com.mbeddr.mpsutil.collections.runtime.msd b/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/test.com.mbeddr.mpsutil.collections.runtime.msd
new file mode 100644
index 00000000000..a9b27af7bd1
--- /dev/null
+++ b/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/test.com.mbeddr.mpsutil.collections.runtime.msd
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<solution name="test.com.mbeddr.mpsutil.collections.runtime" uuid="f88d18b6-41df-491c-ad99-c292037bf751" moduleVersion="0" compileInMPS="true">
+  <models>
+    <modelRoot type="default" contentPath="${module}">
+      <sourceRoot location="models" />
+    </modelRoot>
+  </models>
+  <facets>
+    <facet compile="mps" classes="mps" ext="no" type="java">
+      <classes generated="true" path="${module}/classes_gen" />
+    </facet>
+  </facets>
+  <sourcePath />
+  <dependencies>
+    <dependency reexport="false">8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)</dependency>
+    <dependency reexport="false">ecfb9949-7433-4db5-85de-0f84d172e4ce(de.q60.mps.collections.libs)</dependency>
+    <dependency reexport="false">ceab5195-25ea-4f22-9b92-103b95ca8c0c(jetbrains.mps.lang.core)</dependency>
+    <dependency reexport="false">f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)</dependency>
+    <dependency reexport="false">3f2dbc2e-ad41-470f-b5f1-2869513d2b58(com.mbeddr.mpsutil.collections.runtime)</dependency>
+    <dependency reexport="false">8585453e-6bfb-4d80-98de-b16074f1d86c(jetbrains.mps.lang.test)</dependency>
+    <dependency reexport="false">83888646-71ce-4f1c-9c53-c54016f6ad4f(jetbrains.mps.baseLanguage.collections)</dependency>
+    <dependency reexport="false">e89e1550-b8fe-4f0d-a7fd-487968b42405(com.mbeddr.mpsutil.collections)</dependency>
+  </dependencies>
+  <languageVersions>
+    <language slang="l:e89e1550-b8fe-4f0d-a7fd-487968b42405:com.mbeddr.mpsutil.collections" version="0" />
+    <language slang="l:f3061a53-9226-4cc5-a443-f952ceaf5816:jetbrains.mps.baseLanguage" version="12" />
+    <language slang="l:443f4c36-fcf5-4eb6-9500-8d06ed259e3e:jetbrains.mps.baseLanguage.classifiers" version="0" />
+    <language slang="l:fd392034-7849-419d-9071-12563d152375:jetbrains.mps.baseLanguage.closures" version="0" />
+    <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="1" />
+    <language slang="l:f61473f9-130f-42f6-b98d-6c438812c2f6:jetbrains.mps.baseLanguage.unitTest" version="1" />
+    <language slang="l:ceab5195-25ea-4f22-9b92-103b95ca8c0c:jetbrains.mps.lang.core" version="2" />
+    <language slang="l:446c26eb-2b7b-4bf0-9b35-f83fa582753e:jetbrains.mps.lang.modelapi" version="0" />
+    <language slang="l:3a13115c-633c-4c5c-bbcc-75c4219e9555:jetbrains.mps.lang.quotation" version="5" />
+    <language slang="l:7866978e-a0f0-4cc7-81bc-4d213d9375e1:jetbrains.mps.lang.smodel" version="19" />
+    <language slang="l:8585453e-6bfb-4d80-98de-b16074f1d86c:jetbrains.mps.lang.test" version="6" />
+    <language slang="l:9ded098b-ad6a-4657-bfd9-48636cfe8bc3:jetbrains.mps.lang.traceable" version="0" />
+  </languageVersions>
+  <dependencyVersions>
+    <module reference="3f233e7f-b8a6-46d2-a57f-795d56775243(Annotations)" version="0" />
+    <module reference="6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)" version="0" />
+    <module reference="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea(MPS.Core)" version="0" />
+    <module reference="8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)" version="0" />
+    <module reference="e89e1550-b8fe-4f0d-a7fd-487968b42405(com.mbeddr.mpsutil.collections)" version="0" />
+    <module reference="3f2dbc2e-ad41-470f-b5f1-2869513d2b58(com.mbeddr.mpsutil.collections.runtime)" version="0" />
+    <module reference="ecfb9949-7433-4db5-85de-0f84d172e4ce(de.q60.mps.collections.libs)" version="0" />
+    <module reference="f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)" version="0" />
+    <module reference="443f4c36-fcf5-4eb6-9500-8d06ed259e3e(jetbrains.mps.baseLanguage.classifiers)" version="0" />
+    <module reference="fd392034-7849-419d-9071-12563d152375(jetbrains.mps.baseLanguage.closures)" version="0" />
+    <module reference="83888646-71ce-4f1c-9c53-c54016f6ad4f(jetbrains.mps.baseLanguage.collections)" version="0" />
+    <module reference="e39e4a59-8cb6-498e-860e-8fa8361c0d90(jetbrains.mps.baseLanguage.scopes)" version="0" />
+    <module reference="f61473f9-130f-42f6-b98d-6c438812c2f6(jetbrains.mps.baseLanguage.unitTest)" version="0" />
+    <module reference="2d3c70e9-aab2-4870-8d8d-6036800e4103(jetbrains.mps.kernel)" version="0" />
+    <module reference="ceab5195-25ea-4f22-9b92-103b95ca8c0c(jetbrains.mps.lang.core)" version="0" />
+    <module reference="8585453e-6bfb-4d80-98de-b16074f1d86c(jetbrains.mps.lang.test)" version="0" />
+    <module reference="9ded098b-ad6a-4657-bfd9-48636cfe8bc3(jetbrains.mps.lang.traceable)" version="0" />
+    <module reference="f88d18b6-41df-491c-ad99-c292037bf751(test.com.mbeddr.mpsutil.collections.runtime)" version="0" />
+  </dependencyVersions>
+</solution>
+

From 9034a131e4dc76e27c2aa6c4803ce973cf38c5b6 Mon Sep 17 00:00:00 2001
From: Alexander Pann <apann@itemis.com>
Date: Sun, 10 Nov 2024 18:07:50 +0100
Subject: [PATCH 2/5] add some tests to show thatNodeEquivalence.equals(a,b) ->
 NodeEquivalence.hash (a) == NodeEquivalence.hash (b)

---
 ...com.mbeddr.mpsutil.collections.runtime.mps | 106 ++++++++++++++++++
 1 file changed, 106 insertions(+)

diff --git a/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps b/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps
index 7e5086cc54f..046180dfa5f 100644
--- a/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps
+++ b/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps
@@ -333,6 +333,31 @@
             </node>
           </node>
         </node>
+        <node concept="3clFbH" id="1OJeGyIxtes" role="3cqZAp" />
+        <node concept="3vlDli" id="7Pm1OAZkSlO" role="3cqZAp">
+          <node concept="2OqwBi" id="7Pm1OAZkTnI" role="3tpDZB">
+            <node concept="37vLTw" id="7Pm1OAZkT4M" role="2Oq$k0">
+              <ref role="3cqZAo" node="68F0Oxkgi7p" resolve="equivalence" />
+            </node>
+            <node concept="liA8E" id="7Pm1OAZkTSF" role="2OqNvi">
+              <ref role="37wK5l" to="gyfg:~Equivalence.hash(java.lang.Object)" resolve="hash" />
+              <node concept="37vLTw" id="7Pm1OAZkU33" role="37wK5m">
+                <ref role="3cqZAo" node="68F0OxkgjHV" resolve="cl1" />
+              </node>
+            </node>
+          </node>
+          <node concept="2OqwBi" id="7Pm1OAZkUi5" role="3tpDZA">
+            <node concept="37vLTw" id="7Pm1OAZkUi6" role="2Oq$k0">
+              <ref role="3cqZAo" node="68F0Oxkgi7p" resolve="equivalence" />
+            </node>
+            <node concept="liA8E" id="7Pm1OAZkUi7" role="2OqNvi">
+              <ref role="37wK5l" to="gyfg:~Equivalence.hash(java.lang.Object)" resolve="hash" />
+              <node concept="37vLTw" id="7Pm1OAZkUi8" role="37wK5m">
+                <ref role="3cqZAo" node="68F0Oxkgozz" resolve="cl2" />
+              </node>
+            </node>
+          </node>
+        </node>
       </node>
     </node>
     <node concept="1LZb2c" id="4JmsWjEldxq" role="1SL9yI">
@@ -424,6 +449,31 @@
             </node>
           </node>
         </node>
+        <node concept="3clFbH" id="7Pm1OAZkQFZ" role="3cqZAp" />
+        <node concept="3vlDli" id="7Pm1OAZkQV5" role="3cqZAp">
+          <node concept="2OqwBi" id="7Pm1OAZkUTa" role="3tpDZB">
+            <node concept="37vLTw" id="7Pm1OAZkUBC" role="2Oq$k0">
+              <ref role="3cqZAo" node="4JmsWjEldxu" resolve="equivalence" />
+            </node>
+            <node concept="liA8E" id="7Pm1OAZkVq7" role="2OqNvi">
+              <ref role="37wK5l" to="gyfg:~Equivalence.hash(java.lang.Object)" resolve="hash" />
+              <node concept="37vLTw" id="7Pm1OAZkV$C" role="37wK5m">
+                <ref role="3cqZAo" node="4JmsWjEldxz" resolve="cl1" />
+              </node>
+            </node>
+          </node>
+          <node concept="2OqwBi" id="7Pm1OAZkVIo" role="3tpDZA">
+            <node concept="37vLTw" id="7Pm1OAZkVF3" role="2Oq$k0">
+              <ref role="3cqZAo" node="4JmsWjEldxu" resolve="equivalence" />
+            </node>
+            <node concept="liA8E" id="7Pm1OAZkVS4" role="2OqNvi">
+              <ref role="37wK5l" to="gyfg:~Equivalence.hash(java.lang.Object)" resolve="hash" />
+              <node concept="37vLTw" id="7Pm1OAZkW3w" role="37wK5m">
+                <ref role="3cqZAo" node="4JmsWjEldxF" resolve="cl2" />
+              </node>
+            </node>
+          </node>
+        </node>
       </node>
     </node>
     <node concept="1LZb2c" id="68F0OxkguH0" role="1SL9yI">
@@ -499,6 +549,35 @@
             </node>
           </node>
         </node>
+        <node concept="3clFbH" id="7Pm1OAZkWaQ" role="3cqZAp" />
+        <node concept="3vlDli" id="7Pm1OAZkWjT" role="3cqZAp">
+          <node concept="2OqwBi" id="7Pm1OAZkWjU" role="3tpDZB">
+            <node concept="37vLTw" id="7Pm1OAZkWjV" role="2Oq$k0">
+              <ref role="3cqZAo" node="68F0OxkguH4" resolve="equivalence" />
+            </node>
+            <node concept="liA8E" id="7Pm1OAZkWjW" role="2OqNvi">
+              <ref role="37wK5l" to="gyfg:~Equivalence.hash(java.lang.Object)" resolve="hash" />
+              <node concept="37vLTw" id="7Pm1OAZkWjX" role="37wK5m">
+                <ref role="3cqZAo" node="68F0OxkgwBU" resolve="cls" />
+              </node>
+            </node>
+          </node>
+          <node concept="2OqwBi" id="7Pm1OAZkWjY" role="3tpDZA">
+            <node concept="37vLTw" id="7Pm1OAZkWjZ" role="2Oq$k0">
+              <ref role="3cqZAo" node="68F0OxkguH4" resolve="equivalence" />
+            </node>
+            <node concept="liA8E" id="7Pm1OAZkWk0" role="2OqNvi">
+              <ref role="37wK5l" to="gyfg:~Equivalence.hash(java.lang.Object)" resolve="hash" />
+              <node concept="2OqwBi" id="7Pm1OAZkX9Y" role="37wK5m">
+                <node concept="37vLTw" id="7Pm1OAZkX9Z" role="2Oq$k0">
+                  <ref role="3cqZAo" node="68F0OxkgwBU" resolve="cls" />
+                </node>
+                <node concept="1$rogu" id="7Pm1OAZkXa0" role="2OqNvi" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="7Pm1OAZkWjS" role="3cqZAp" />
       </node>
     </node>
     <node concept="1LZb2c" id="68F0Oxkgr15" role="1SL9yI">
@@ -590,6 +669,33 @@
             </node>
           </node>
         </node>
+        <node concept="3clFbH" id="7Pm1OAZlijv" role="3cqZAp" />
+        <node concept="3vFxKo" id="7Pm1OAZliM2" role="3cqZAp">
+          <node concept="17R0WA" id="7Pm1OAZlli3" role="3vFALc">
+            <node concept="2OqwBi" id="7Pm1OAZllOC" role="3uHU7w">
+              <node concept="37vLTw" id="7Pm1OAZllvz" role="2Oq$k0">
+                <ref role="3cqZAo" node="68F0Oxkgr19" resolve="equivalence" />
+              </node>
+              <node concept="liA8E" id="7Pm1OAZllYn" role="2OqNvi">
+                <ref role="37wK5l" to="gyfg:~Equivalence.hash(java.lang.Object)" resolve="hash" />
+                <node concept="37vLTw" id="7Pm1OAZlmcE" role="37wK5m">
+                  <ref role="3cqZAo" node="68F0Oxkgr1m" resolve="cl2" />
+                </node>
+              </node>
+            </node>
+            <node concept="2OqwBi" id="7Pm1OAZljGr" role="3uHU7B">
+              <node concept="37vLTw" id="7Pm1OAZljpv" role="2Oq$k0">
+                <ref role="3cqZAo" node="68F0Oxkgr19" resolve="equivalence" />
+              </node>
+              <node concept="liA8E" id="7Pm1OAZlkfl" role="2OqNvi">
+                <ref role="37wK5l" to="gyfg:~Equivalence.hash(java.lang.Object)" resolve="hash" />
+                <node concept="37vLTw" id="7Pm1OAZlkxq" role="37wK5m">
+                  <ref role="3cqZAo" node="68F0Oxkgr1e" resolve="cl1" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
       </node>
     </node>
   </node>

From e3be3e750520d8da7a9f33a721238c570ff532b4 Mon Sep 17 00:00:00 2001
From: Alexander Pann <apann@itemis.com>
Date: Sun, 10 Nov 2024 18:08:39 +0100
Subject: [PATCH 3/5] improve tests

---
 ...com.mbeddr.mpsutil.collections.runtime.mps | 145 +++---------------
 1 file changed, 18 insertions(+), 127 deletions(-)

diff --git a/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps b/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps
index 046180dfa5f..80fb8e76b08 100644
--- a/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps
+++ b/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps
@@ -92,7 +92,6 @@
       </concept>
       <concept id="1068498886292" name="jetbrains.mps.baseLanguage.structure.ParameterDeclaration" flags="ir" index="37vLTG" />
       <concept id="1225271177708" name="jetbrains.mps.baseLanguage.structure.StringType" flags="in" index="17QB3L" />
-      <concept id="1225271283259" name="jetbrains.mps.baseLanguage.structure.NPEEqualsExpression" flags="nn" index="17R0WA" />
       <concept id="4972933694980447171" name="jetbrains.mps.baseLanguage.structure.BaseVariableDeclaration" flags="ng" index="19Szcq">
         <child id="5680397130376446158" name="type" index="1tU5fm" />
       </concept>
@@ -101,6 +100,7 @@
         <child id="1068580123134" name="parameter" index="3clF46" />
         <child id="1068580123135" name="body" index="3clF47" />
       </concept>
+      <concept id="1068580123152" name="jetbrains.mps.baseLanguage.structure.EqualsExpression" flags="nn" index="3clFbC" />
       <concept id="1068580123155" name="jetbrains.mps.baseLanguage.structure.ExpressionStatement" flags="nn" index="3clFbF">
         <child id="1068580123156" name="expression" index="3clFbG" />
       </concept>
@@ -669,33 +669,6 @@
             </node>
           </node>
         </node>
-        <node concept="3clFbH" id="7Pm1OAZlijv" role="3cqZAp" />
-        <node concept="3vFxKo" id="7Pm1OAZliM2" role="3cqZAp">
-          <node concept="17R0WA" id="7Pm1OAZlli3" role="3vFALc">
-            <node concept="2OqwBi" id="7Pm1OAZllOC" role="3uHU7w">
-              <node concept="37vLTw" id="7Pm1OAZllvz" role="2Oq$k0">
-                <ref role="3cqZAo" node="68F0Oxkgr19" resolve="equivalence" />
-              </node>
-              <node concept="liA8E" id="7Pm1OAZllYn" role="2OqNvi">
-                <ref role="37wK5l" to="gyfg:~Equivalence.hash(java.lang.Object)" resolve="hash" />
-                <node concept="37vLTw" id="7Pm1OAZlmcE" role="37wK5m">
-                  <ref role="3cqZAo" node="68F0Oxkgr1m" resolve="cl2" />
-                </node>
-              </node>
-            </node>
-            <node concept="2OqwBi" id="7Pm1OAZljGr" role="3uHU7B">
-              <node concept="37vLTw" id="7Pm1OAZljpv" role="2Oq$k0">
-                <ref role="3cqZAo" node="68F0Oxkgr19" resolve="equivalence" />
-              </node>
-              <node concept="liA8E" id="7Pm1OAZlkfl" role="2OqNvi">
-                <ref role="37wK5l" to="gyfg:~Equivalence.hash(java.lang.Object)" resolve="hash" />
-                <node concept="37vLTw" id="7Pm1OAZlkxq" role="37wK5m">
-                  <ref role="3cqZAo" node="68F0Oxkgr1e" resolve="cl1" />
-                </node>
-              </node>
-            </node>
-          </node>
-        </node>
       </node>
     </node>
   </node>
@@ -837,89 +810,6 @@
         </node>
       </node>
     </node>
-    <node concept="1LZb2c" id="68F0Oxkf9KS" role="1SL9yI">
-      <property role="TrG5h" value="sameNodeCopyAndDifferentNode" />
-      <node concept="3cqZAl" id="68F0Oxkf9KT" role="3clF45" />
-      <node concept="3clFbS" id="68F0Oxkf9KU" role="3clF47">
-        <node concept="3cpWs8" id="4JmsWjEfWV7" role="3cqZAp">
-          <node concept="3cpWsn" id="4JmsWjEfWV8" role="3cpWs9">
-            <property role="TrG5h" value="set" />
-            <node concept="2hMVRd" id="4JmsWjEfWV9" role="1tU5fm">
-              <node concept="17QB3L" id="4JmsWjEfWVa" role="2hN53Y" />
-            </node>
-            <node concept="2ShNRf" id="4JmsWjEfWVb" role="33vP2m">
-              <node concept="1pGfFk" id="4JmsWjEfWVc" role="2ShVmc">
-                <property role="373rjd" value="true" />
-                <ref role="37wK5l" to="co:6WJM9CJzpYH" resolve="EquivalenceHashSet" />
-              </node>
-            </node>
-          </node>
-        </node>
-        <node concept="3clFbH" id="68F0Oxkf9Lj" role="3cqZAp" />
-        <node concept="3vwNmj" id="68F0Oxkf9L_" role="3cqZAp">
-          <node concept="2OqwBi" id="68F0Oxkf9LA" role="3vwVQn">
-            <node concept="37vLTw" id="68F0Oxkf9LB" role="2Oq$k0">
-              <ref role="3cqZAo" node="4JmsWjEfWV8" resolve="set" />
-            </node>
-            <node concept="1v1jN8" id="68F0Oxkf9LC" role="2OqNvi" />
-          </node>
-        </node>
-        <node concept="3clFbH" id="68F0Oxkf9LD" role="3cqZAp" />
-        <node concept="3clFbF" id="3jVUTQDfSWL" role="3cqZAp">
-          <node concept="2OqwBi" id="3jVUTQDfSWF" role="3clFbG">
-            <node concept="2WthIp" id="3jVUTQDfSWI" role="2Oq$k0" />
-            <node concept="2XshWL" id="3jVUTQDfSWK" role="2OqNvi">
-              <ref role="2WH_rO" node="3jVUTQDfPQ9" resolve="addMultipleTimes" />
-              <node concept="37vLTw" id="3jVUTQDfSWN" role="2XxRq1">
-                <ref role="3cqZAo" node="4JmsWjEfWV8" resolve="set" />
-              </node>
-              <node concept="Xl_RD" id="4JmsWjEga9C" role="2XxRq1">
-                <property role="Xl_RC" value="hello" />
-              </node>
-            </node>
-          </node>
-        </node>
-        <node concept="3vlDli" id="68F0Oxkf9LJ" role="3cqZAp">
-          <node concept="3cmrfG" id="68F0Oxkf9LK" role="3tpDZB">
-            <property role="3cmrfH" value="1" />
-          </node>
-          <node concept="2OqwBi" id="68F0Oxkf9LL" role="3tpDZA">
-            <node concept="37vLTw" id="68F0Oxkf9LM" role="2Oq$k0">
-              <ref role="3cqZAo" node="4JmsWjEfWV8" resolve="set" />
-            </node>
-            <node concept="34oBXx" id="68F0Oxkf9LN" role="2OqNvi" />
-          </node>
-          <node concept="3_1$Yv" id="68F0OxkfoHc" role="3_9lra" />
-        </node>
-        <node concept="3clFbH" id="3jVUTQDfVmd" role="3cqZAp" />
-        <node concept="3clFbF" id="3jVUTQDfZ7a" role="3cqZAp">
-          <node concept="2OqwBi" id="3jVUTQDfZ7b" role="3clFbG">
-            <node concept="2WthIp" id="3jVUTQDfZ7c" role="2Oq$k0" />
-            <node concept="2XshWL" id="3jVUTQDfZ7d" role="2OqNvi">
-              <ref role="2WH_rO" node="3jVUTQDfPQ9" resolve="addMultipleTimes" />
-              <node concept="37vLTw" id="3jVUTQDfZ7e" role="2XxRq1">
-                <ref role="3cqZAo" node="4JmsWjEfWV8" resolve="set" />
-              </node>
-              <node concept="Xl_RD" id="4JmsWjEgbVE" role="2XxRq1">
-                <property role="Xl_RC" value="world" />
-              </node>
-            </node>
-          </node>
-        </node>
-        <node concept="3vlDli" id="68F0Oxkf9M5" role="3cqZAp">
-          <node concept="2OqwBi" id="68F0Oxkf9M6" role="3tpDZA">
-            <node concept="37vLTw" id="68F0Oxkf9M7" role="2Oq$k0">
-              <ref role="3cqZAo" node="4JmsWjEfWV8" resolve="set" />
-            </node>
-            <node concept="34oBXx" id="68F0Oxkf9M8" role="2OqNvi" />
-          </node>
-          <node concept="3cmrfG" id="68F0Oxkf9M9" role="3tpDZB">
-            <property role="3cmrfH" value="2" />
-          </node>
-          <node concept="3_1$Yv" id="68F0Oxkfsh6" role="3_9lra" />
-        </node>
-      </node>
-    </node>
     <node concept="1LZb2c" id="6uHwNxleUTp" role="1SL9yI">
       <property role="TrG5h" value="index" />
       <node concept="3cqZAl" id="6uHwNxleUTq" role="3clF45" />
@@ -1102,30 +992,31 @@
           </node>
         </node>
         <node concept="3clFbH" id="6uHwNxlf9Lx" role="3cqZAp" />
-        <node concept="3vlDli" id="6uHwNxlfcnz" role="3cqZAp">
-          <node concept="3cmrfG" id="6uHwNxlfcnD" role="3tpDZB">
-            <property role="3cmrfH" value="2" />
+        <node concept="3clFbF" id="7Pm1OAZlUd7" role="3cqZAp">
+          <node concept="2OqwBi" id="7Pm1OAZlWII" role="3clFbG">
+            <node concept="37vLTw" id="7Pm1OAZlUd5" role="2Oq$k0">
+              <ref role="3cqZAo" node="4JmsWjEfXkM" resolve="set" />
+            </node>
+            <node concept="3dhRuq" id="7Pm1OAZm0do" role="2OqNvi">
+              <node concept="Xl_RD" id="7Pm1OAZm3pl" role="25WWJ7">
+                <property role="Xl_RC" value="hello" />
+              </node>
+            </node>
           </node>
+        </node>
+        <node concept="3clFbH" id="7Pm1OAZlIKh" role="3cqZAp" />
+        <node concept="3vlDli" id="6uHwNxlfcnz" role="3cqZAp">
           <node concept="2OqwBi" id="6uHwNxlfdzv" role="3tpDZA">
             <node concept="37vLTw" id="6uHwNxlfcnE" role="2Oq$k0">
               <ref role="3cqZAo" node="4JmsWjEfXkM" resolve="set" />
             </node>
             <node concept="34oBXx" id="6uHwNxlfeEB" role="2OqNvi" />
           </node>
-        </node>
-        <node concept="3clFbH" id="6uHwNxlffbu" role="3cqZAp" />
-        <node concept="3clFbF" id="6uHwNxlffb_" role="3cqZAp">
-          <node concept="2OqwBi" id="6uHwNxlfgtk" role="3clFbG">
-            <node concept="37vLTw" id="6uHwNxlffbz" role="2Oq$k0">
-              <ref role="3cqZAo" node="4JmsWjEfXkM" resolve="set" />
-            </node>
-            <node concept="3dhRuq" id="6uHwNxlfhyc" role="2OqNvi">
-              <node concept="Xl_RD" id="4JmsWjEgoWX" role="25WWJ7">
-                <property role="Xl_RC" value="hello" />
-              </node>
-            </node>
+          <node concept="3cmrfG" id="7Pm1OAZm5TB" role="3tpDZB">
+            <property role="3cmrfH" value="1" />
           </node>
         </node>
+        <node concept="3clFbH" id="6uHwNxlffbu" role="3cqZAp" />
         <node concept="3clFbF" id="6uHwNxlfiit" role="3cqZAp">
           <node concept="2OqwBi" id="6uHwNxlfiiu" role="3clFbG">
             <node concept="37vLTw" id="6uHwNxlfiiv" role="2Oq$k0">
@@ -1874,7 +1765,7 @@
           </node>
         </node>
         <node concept="3vFxKo" id="13oTmDlxgHv" role="3cqZAp">
-          <node concept="17R0WA" id="13oTmDlxj3a" role="3vFALc">
+          <node concept="3clFbC" id="7Pm1OAZmoiH" role="3vFALc">
             <node concept="2OqwBi" id="13oTmDlxgOC" role="3uHU7B">
               <node concept="37vLTw" id="13oTmDlxgOD" role="2Oq$k0">
                 <ref role="3cqZAo" node="13oTmDlxayN" resolve="equivalence" />

From 37e7a0b9b5c34f1d7f7418b687d529f0e125f062 Mon Sep 17 00:00:00 2001
From: Alexander Pann <apann@itemis.com>
Date: Mon, 11 Nov 2024 18:07:23 +0100
Subject: [PATCH 4/5] mpsutil.collections: make the nset parameter look like a
 copy constructor

---
 .../models/com.mbeddr.mpsutil.collections.editor.mps | 12 ++++++++++--
 .../com.mbeddr.mpsutil.collections.runtime.mps       |  4 ++--
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.editor.mps b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.editor.mps
index 0ce5dda7360..75de723eaaf 100644
--- a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.editor.mps
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.editor.mps
@@ -145,8 +145,12 @@
         <node concept="3EZMnI" id="4JmsWjDRhK2" role="_tjki">
           <node concept="2iRfu4" id="4JmsWjDRhK3" role="2iSdaV" />
           <node concept="3F0ifn" id="4JmsWjDRhIC" role="3EZMnx">
-            <property role="3F0ifm" value="by" />
-            <ref role="1k5W1q" to="tpen:hgVS8CF" resolve="KeyWord" />
+            <property role="3F0ifm" value="(" />
+            <ref role="1k5W1q" to="tpen:hY9fg1G" resolve="LeftParenAfterName" />
+          </node>
+          <node concept="3F0ifn" id="5YWahjSLxMn" role="3EZMnx">
+            <property role="3F0ifm" value="copy:" />
+            <ref role="1k5W1q" to="tpen:hshU_KJ" resolve="Annotation" />
           </node>
           <node concept="3F1sOY" id="4JmsWjDRhKL" role="3EZMnx">
             <property role="39s7Ar" value="true" />
@@ -164,6 +168,10 @@
           </node>
         </node>
       </node>
+      <node concept="3F0ifn" id="5YWahjSLxMq" role="3EZMnx">
+        <property role="3F0ifm" value=")" />
+        <ref role="1k5W1q" to="tpen:hFCSUmN" resolve="RightParen" />
+      </node>
     </node>
   </node>
 </model>
diff --git a/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/models/com.mbeddr.mpsutil.collections.runtime.mps b/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/models/com.mbeddr.mpsutil.collections.runtime.mps
index 657df38a187..6a906aa6d10 100644
--- a/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/models/com.mbeddr.mpsutil.collections.runtime.mps
+++ b/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/models/com.mbeddr.mpsutil.collections.runtime.mps
@@ -1413,7 +1413,7 @@
     <node concept="3clFbW" id="2UDGRNXxxvO" role="jymVt">
       <node concept="3cqZAl" id="2UDGRNXxxvP" role="3clF45" />
       <node concept="37vLTG" id="2UDGRNXxxvQ" role="3clF46">
-        <property role="TrG5h" value="set" />
+        <property role="TrG5h" value="copy" />
         <node concept="3uibUv" id="2UDGRNXxxvR" role="1tU5fm">
           <ref role="3uigEE" to="33ny:~Set" resolve="Set" />
         </node>
@@ -1422,7 +1422,7 @@
         <node concept="XkiVB" id="2UDGRNXx_PA" role="3cqZAp">
           <ref role="37wK5l" node="5wNjLS4qFj3" resolve="EquivalenceHashSet" />
           <node concept="37vLTw" id="2UDGRNXxFBw" role="37wK5m">
-            <ref role="3cqZAo" node="2UDGRNXxxvQ" resolve="set" />
+            <ref role="3cqZAo" node="2UDGRNXxxvQ" resolve="copy" />
           </node>
           <node concept="2ShNRf" id="2UDGRNXxFFV" role="37wK5m">
             <node concept="HV5vD" id="2UDGRNXxFFW" role="2ShVmc">

From 53ddb1c6665c28defbfb842b065e193c520b0b36 Mon Sep 17 00:00:00 2001
From: Alexander Pann <apann@itemis.com>
Date: Tue, 12 Nov 2024 08:25:08 +0100
Subject: [PATCH 5/5] execute pending migrations

---
 .../com.mbeddr.mpsutil.collections.mpl             |  5 ++---
 ...l.collections.generator.templates@generator.mps |  6 +++---
 .../com.mbeddr.mpsutil.collections.behavior.mps    |  6 +++---
 .../com.mbeddr.mpsutil.collections.editor.mps      |  8 ++++----
 .../com.mbeddr.mpsutil.collections.structure.mps   |  2 +-
 .../com.mbeddr.mpsutil.collections.typesystem.mps  |  6 +++---
 .../com.mbeddr.mpsutil.collections.runtime.msd     |  5 ++---
 .../com.mbeddr.mpsutil.collections.runtime.mps     | 14 +++++++-------
 ...test.com.mbeddr.mpsutil.collections.runtime.mps | 14 +++++++-------
 ...test.com.mbeddr.mpsutil.collections.runtime.msd |  5 ++---
 10 files changed, 34 insertions(+), 37 deletions(-)

diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/com.mbeddr.mpsutil.collections.mpl b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/com.mbeddr.mpsutil.collections.mpl
index aee2b3a12ad..f52a4495bc7 100644
--- a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/com.mbeddr.mpsutil.collections.mpl
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/com.mbeddr.mpsutil.collections.mpl
@@ -33,7 +33,7 @@
       <languageVersions>
         <language slang="l:f3061a53-9226-4cc5-a443-f952ceaf5816:jetbrains.mps.baseLanguage" version="12" />
         <language slang="l:fd392034-7849-419d-9071-12563d152375:jetbrains.mps.baseLanguage.closures" version="0" />
-        <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="1" />
+        <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="2" />
         <language slang="l:f2801650-65d5-424e-bb1b-463a8781b786:jetbrains.mps.baseLanguage.javadoc" version="2" />
         <language slang="l:760a0a8c-eabb-4521-8bfd-65db761a9ba3:jetbrains.mps.baseLanguage.logging" version="0" />
         <language slang="l:a247e09e-2435-45ba-b8d2-07e93feba96a:jetbrains.mps.baseLanguage.tuples" version="0" />
@@ -82,7 +82,6 @@
       </mapping-priorities>
     </generator>
   </generators>
-  <sourcePath />
   <dependencies>
     <dependency reexport="false">c72da2b9-7cce-4447-8389-f407dc1158b7(jetbrains.mps.lang.structure)</dependency>
     <dependency reexport="false">f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)</dependency>
@@ -100,7 +99,7 @@
     <language slang="l:f3061a53-9226-4cc5-a443-f952ceaf5816:jetbrains.mps.baseLanguage" version="12" />
     <language slang="l:443f4c36-fcf5-4eb6-9500-8d06ed259e3e:jetbrains.mps.baseLanguage.classifiers" version="0" />
     <language slang="l:fd392034-7849-419d-9071-12563d152375:jetbrains.mps.baseLanguage.closures" version="0" />
-    <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="1" />
+    <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="2" />
     <language slang="l:f2801650-65d5-424e-bb1b-463a8781b786:jetbrains.mps.baseLanguage.javadoc" version="2" />
     <language slang="l:760a0a8c-eabb-4521-8bfd-65db761a9ba3:jetbrains.mps.baseLanguage.logging" version="0" />
     <language slang="l:a247e09e-2435-45ba-b8d2-07e93feba96a:jetbrains.mps.baseLanguage.tuples" version="0" />
diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/generator/templates/com.mbeddr.mpsutil.collections.generator.templates@generator.mps b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/generator/templates/com.mbeddr.mpsutil.collections.generator.templates@generator.mps
index da5c9c9735d..a27be5bb9b9 100644
--- a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/generator/templates/com.mbeddr.mpsutil.collections.generator.templates@generator.mps
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/generator/templates/com.mbeddr.mpsutil.collections.generator.templates@generator.mps
@@ -25,7 +25,7 @@
         <child id="1137022507850" name="body" index="2VODD2" />
       </concept>
       <concept id="1070534058343" name="jetbrains.mps.baseLanguage.structure.NullLiteral" flags="nn" index="10Nm6u" />
-      <concept id="1513279640923991009" name="jetbrains.mps.baseLanguage.structure.IGenericClassCreator" flags="ng" index="366HgL">
+      <concept id="1513279640923991009" name="jetbrains.mps.baseLanguage.structure.IGenericClassCreator" flags="ngI" index="366HgL">
         <property id="1513279640906337053" name="inferTypeParams" index="373rjd" />
       </concept>
       <concept id="1068580123155" name="jetbrains.mps.baseLanguage.structure.ExpressionStatement" flags="nn" index="3clFbF">
@@ -34,7 +34,7 @@
       <concept id="1068580123136" name="jetbrains.mps.baseLanguage.structure.StatementList" flags="sn" stub="5293379017992965193" index="3clFbS">
         <child id="1068581517665" name="statement" index="3cqZAp" />
       </concept>
-      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
+      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ngI" index="1ndlxa">
         <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
         <child id="1068499141038" name="actualArgument" index="37wK5m" />
       </concept>
@@ -93,7 +93,7 @@
       <concept id="1133920641626" name="jetbrains.mps.lang.core.structure.BaseConcept" flags="ng" index="2VYdi">
         <child id="5169995583184591170" name="smodelAttribute" index="lGtFl" />
       </concept>
-      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ngI" index="TrEIO">
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
     </language>
diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.behavior.mps b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.behavior.mps
index 0d9ecf11492..30ccff27d03 100644
--- a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.behavior.mps
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.behavior.mps
@@ -94,7 +94,7 @@
       </concept>
       <concept id="1068581242863" name="jetbrains.mps.baseLanguage.structure.LocalVariableDeclaration" flags="nr" index="3cpWsn" />
       <concept id="1068581517677" name="jetbrains.mps.baseLanguage.structure.VoidType" flags="in" index="3cqZAl" />
-      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
+      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ngI" index="1ndlxa">
         <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
         <child id="1068499141038" name="actualArgument" index="37wK5m" />
       </concept>
@@ -106,7 +106,7 @@
         <child id="1081773367579" name="rightExpression" index="3uHU7w" />
         <child id="1081773367580" name="leftExpression" index="3uHU7B" />
       </concept>
-      <concept id="1178549954367" name="jetbrains.mps.baseLanguage.structure.IVisible" flags="ng" index="1B3ioH">
+      <concept id="1178549954367" name="jetbrains.mps.baseLanguage.structure.IVisible" flags="ngI" index="1B3ioH">
         <child id="1178549979242" name="visibility" index="1B3o_S" />
       </concept>
       <concept id="1163668896201" name="jetbrains.mps.baseLanguage.structure.TernaryOperatorExpression" flags="nn" index="3K4zz7">
@@ -151,7 +151,7 @@
       </concept>
     </language>
     <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" name="jetbrains.mps.lang.core">
-      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ngI" index="TrEIO">
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
     </language>
diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.editor.mps b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.editor.mps
index 75de723eaaf..c86d2a0b086 100644
--- a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.editor.mps
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.editor.mps
@@ -27,7 +27,7 @@
       <concept id="1088013125922" name="jetbrains.mps.lang.editor.structure.CellModel_RefCell" flags="sg" stub="730538219795941030" index="1iCGBv">
         <child id="1088186146602" name="editorComponent" index="1sWHZn" />
       </concept>
-      <concept id="1381004262292414836" name="jetbrains.mps.lang.editor.structure.ICellStyle" flags="ng" index="1k5N5V">
+      <concept id="1381004262292414836" name="jetbrains.mps.lang.editor.structure.ICellStyle" flags="ngI" index="1k5N5V">
         <reference id="1381004262292426837" name="parentStyleClass" index="1k5W1q" />
       </concept>
       <concept id="1088185857835" name="jetbrains.mps.lang.editor.structure.InlineEditorComponent" flags="ig" index="1sVBvm" />
@@ -49,7 +49,7 @@
         <property id="1073389577007" name="text" index="3F0ifm" />
       </concept>
       <concept id="1073389658414" name="jetbrains.mps.lang.editor.structure.CellModel_Property" flags="sg" stub="730538219796134133" index="3F0A7n" />
-      <concept id="1219418625346" name="jetbrains.mps.lang.editor.structure.IStyleContainer" flags="ng" index="3F0Thp">
+      <concept id="1219418625346" name="jetbrains.mps.lang.editor.structure.IStyleContainer" flags="ngI" index="3F0Thp">
         <child id="1219418656006" name="styleItem" index="3F10Kt" />
       </concept>
       <concept id="1073389882823" name="jetbrains.mps.lang.editor.structure.CellModel_RefNode" flags="sg" stub="730538219795960754" index="3F1sOY" />
@@ -76,12 +76,12 @@
       <concept id="5083944728298846680" name="com.mbeddr.mpsutil.grammarcells.structure.OptionalCell" flags="ng" index="_tjkj">
         <child id="5083944728298846681" name="option" index="_tjki" />
       </concept>
-      <concept id="848437706375087728" name="com.mbeddr.mpsutil.grammarcells.structure.ICanHaveDescriptionText" flags="ng" index="1djCvD">
+      <concept id="848437706375087728" name="com.mbeddr.mpsutil.grammarcells.structure.ICanHaveDescriptionText" flags="ngI" index="1djCvD">
         <child id="848437706375087729" name="descriptionText" index="1djCvC" />
       </concept>
     </language>
     <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" name="jetbrains.mps.lang.core">
-      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ngI" index="TrEIO">
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
     </language>
diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.structure.mps b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.structure.mps
index db79e937d24..8c195abc9f7 100644
--- a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.structure.mps
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.structure.mps
@@ -32,7 +32,7 @@
       </concept>
     </language>
     <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" name="jetbrains.mps.lang.core">
-      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ngI" index="TrEIO">
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
     </language>
diff --git a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.typesystem.mps b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.typesystem.mps
index ec81675a8e4..22e7ab8967c 100644
--- a/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.typesystem.mps
+++ b/code/languages/com.mbeddr.mpsutil/languages/com.mbeddr.mpsutil.collections/models/com.mbeddr.mpsutil.collections.typesystem.mps
@@ -64,7 +64,7 @@
       <concept id="1081516740877" name="jetbrains.mps.baseLanguage.structure.NotExpression" flags="nn" index="3fqX7Q">
         <child id="1081516765348" name="expression" index="3fr31v" />
       </concept>
-      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
+      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ngI" index="1ndlxa">
         <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
       </concept>
       <concept id="1107535904670" name="jetbrains.mps.baseLanguage.structure.ClassifierType" flags="in" index="3uibUv">
@@ -94,7 +94,7 @@
       </concept>
     </language>
     <language id="3a13115c-633c-4c5c-bbcc-75c4219e9555" name="jetbrains.mps.lang.quotation">
-      <concept id="1196350785110" name="jetbrains.mps.lang.quotation.structure.AbstractAntiquotation" flags="ng" index="2c44t0">
+      <concept id="1196350785110" name="jetbrains.mps.lang.quotation.structure.AbstractAntiquotation" flags="ngI" index="2c44t0">
         <child id="1196350785111" name="expression" index="2c44t1" />
       </concept>
       <concept id="1196350785117" name="jetbrains.mps.lang.quotation.structure.ReferenceAntiquotation" flags="ng" index="2c44tb" />
@@ -179,7 +179,7 @@
         <property id="1757699476691236116" name="role_DebugInfo" index="2qtEX8" />
         <property id="1341860900488019036" name="linkId" index="P3scX" />
       </concept>
-      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ngI" index="TrEIO">
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
     </language>
diff --git a/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/com.mbeddr.mpsutil.collections.runtime.msd b/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/com.mbeddr.mpsutil.collections.runtime.msd
index d32841e6fa3..4e596bd6e27 100644
--- a/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/com.mbeddr.mpsutil.collections.runtime.msd
+++ b/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/com.mbeddr.mpsutil.collections.runtime.msd
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<solution name="com.mbeddr.mpsutil.collections.runtime" uuid="3f2dbc2e-ad41-470f-b5f1-2869513d2b58" moduleVersion="0" compileInMPS="true">
+<solution name="com.mbeddr.mpsutil.collections.runtime" uuid="3f2dbc2e-ad41-470f-b5f1-2869513d2b58" moduleVersion="0">
   <models>
     <modelRoot type="default" contentPath="${module}">
       <sourceRoot location="models" />
@@ -10,7 +10,6 @@
       <classes generated="true" path="${module}/classes_gen" />
     </facet>
   </facets>
-  <sourcePath />
   <dependencies>
     <dependency reexport="false">8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)</dependency>
     <dependency reexport="false">6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)</dependency>
@@ -25,7 +24,7 @@
     <language slang="l:e89e1550-b8fe-4f0d-a7fd-487968b42405:com.mbeddr.mpsutil.collections" version="0" />
     <language slang="l:f3061a53-9226-4cc5-a443-f952ceaf5816:jetbrains.mps.baseLanguage" version="12" />
     <language slang="l:fd392034-7849-419d-9071-12563d152375:jetbrains.mps.baseLanguage.closures" version="0" />
-    <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="1" />
+    <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="2" />
     <language slang="l:acfc188d-d5d6-4598-b370-6f4a983f05b2:jetbrains.mps.baseLanguage.methodReferences" version="0" />
     <language slang="l:ceab5195-25ea-4f22-9b92-103b95ca8c0c:jetbrains.mps.lang.core" version="2" />
     <language slang="l:446c26eb-2b7b-4bf0-9b35-f83fa582753e:jetbrains.mps.lang.modelapi" version="0" />
diff --git a/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/models/com.mbeddr.mpsutil.collections.runtime.mps b/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/models/com.mbeddr.mpsutil.collections.runtime.mps
index 6a906aa6d10..0f22675cb52 100644
--- a/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/models/com.mbeddr.mpsutil.collections.runtime.mps
+++ b/code/languages/com.mbeddr.mpsutil/solutions/com.mbeddr.mpsutil.collections.runtime/models/com.mbeddr.mpsutil.collections.runtime.mps
@@ -5,7 +5,7 @@
     <use id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage" version="12" />
     <use id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel" version="19" />
     <use id="acfc188d-d5d6-4598-b370-6f4a983f05b2" name="jetbrains.mps.baseLanguage.methodReferences" version="0" />
-    <use id="83888646-71ce-4f1c-9c53-c54016f6ad4f" name="jetbrains.mps.baseLanguage.collections" version="1" />
+    <use id="83888646-71ce-4f1c-9c53-c54016f6ad4f" name="jetbrains.mps.baseLanguage.collections" version="2" />
     <use id="fd392034-7849-419d-9071-12563d152375" name="jetbrains.mps.baseLanguage.closures" version="0" />
     <use id="e89e1550-b8fe-4f0d-a7fd-487968b42405" name="com.mbeddr.mpsutil.collections" version="0" />
   </languages>
@@ -35,7 +35,7 @@
       <concept id="1188207840427" name="jetbrains.mps.baseLanguage.structure.AnnotationInstance" flags="nn" index="2AHcQZ">
         <reference id="1188208074048" name="annotation" index="2AI5Lk" />
       </concept>
-      <concept id="1188208481402" name="jetbrains.mps.baseLanguage.structure.HasAnnotation" flags="ng" index="2AJDlI">
+      <concept id="1188208481402" name="jetbrains.mps.baseLanguage.structure.HasAnnotation" flags="ngI" index="2AJDlI">
         <child id="1188208488637" name="annotation" index="2AJF6D" />
       </concept>
       <concept id="2820489544401957797" name="jetbrains.mps.baseLanguage.structure.DefaultClassCreator" flags="nn" index="HV5vD">
@@ -84,7 +84,7 @@
         <property id="1176718929932" name="isFinal" index="3TUv4t" />
         <child id="1068431790190" name="initializer" index="33vP2m" />
       </concept>
-      <concept id="1513279640923991009" name="jetbrains.mps.baseLanguage.structure.IGenericClassCreator" flags="ng" index="366HgL">
+      <concept id="1513279640923991009" name="jetbrains.mps.baseLanguage.structure.IGenericClassCreator" flags="ngI" index="366HgL">
         <property id="1513279640906337053" name="inferTypeParams" index="373rjd" />
       </concept>
       <concept id="1109279763828" name="jetbrains.mps.baseLanguage.structure.TypeVariableDeclaration" flags="ng" index="16euLQ" />
@@ -143,7 +143,7 @@
       <concept id="1081516740877" name="jetbrains.mps.baseLanguage.structure.NotExpression" flags="nn" index="3fqX7Q">
         <child id="1081516765348" name="expression" index="3fr31v" />
       </concept>
-      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
+      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ngI" index="1ndlxa">
         <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
         <child id="1068499141038" name="actualArgument" index="37wK5m" />
         <child id="4972241301747169160" name="typeArgument" index="3PaCim" />
@@ -166,7 +166,7 @@
         <child id="1081773367580" name="leftExpression" index="3uHU7B" />
       </concept>
       <concept id="1073239437375" name="jetbrains.mps.baseLanguage.structure.NotEqualsExpression" flags="nn" index="3y3z36" />
-      <concept id="1178549954367" name="jetbrains.mps.baseLanguage.structure.IVisible" flags="ng" index="1B3ioH">
+      <concept id="1178549954367" name="jetbrains.mps.baseLanguage.structure.IVisible" flags="ngI" index="1B3ioH">
         <child id="1178549979242" name="visibility" index="1B3o_S" />
       </concept>
       <concept id="1144226303539" name="jetbrains.mps.baseLanguage.structure.ForeachStatement" flags="nn" index="1DcWWT">
@@ -191,7 +191,7 @@
         <child id="7915009415671751864" name="type" index="2FaQuo" />
       </concept>
       <concept id="237887375562511215" name="jetbrains.mps.baseLanguage.methodReferences.structure.MethodReference" flags="ng" index="37Ijox" />
-      <concept id="3507059745126391419" name="jetbrains.mps.baseLanguage.methodReferences.structure.IMethodReference" flags="ng" index="3UZKCU">
+      <concept id="3507059745126391419" name="jetbrains.mps.baseLanguage.methodReferences.structure.IMethodReference" flags="ngI" index="3UZKCU">
         <reference id="237887375562511297" name="method" index="37Ijqf" />
         <child id="962278442658307079" name="target" index="wWaWy" />
       </concept>
@@ -200,7 +200,7 @@
       <concept id="1138055754698" name="jetbrains.mps.lang.smodel.structure.SNodeType" flags="in" index="3Tqbb2" />
     </language>
     <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" name="jetbrains.mps.lang.core">
-      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ngI" index="TrEIO">
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
     </language>
diff --git a/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps b/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps
index 80fb8e76b08..d08a6ac5495 100644
--- a/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps
+++ b/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/models/test.com.mbeddr.mpsutil.collections.runtime.mps
@@ -4,7 +4,7 @@
   <languages>
     <use id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel" version="19" />
     <use id="8585453e-6bfb-4d80-98de-b16074f1d86c" name="jetbrains.mps.lang.test" version="6" />
-    <use id="83888646-71ce-4f1c-9c53-c54016f6ad4f" name="jetbrains.mps.baseLanguage.collections" version="1" />
+    <use id="83888646-71ce-4f1c-9c53-c54016f6ad4f" name="jetbrains.mps.baseLanguage.collections" version="2" />
     <use id="446c26eb-2b7b-4bf0-9b35-f83fa582753e" name="jetbrains.mps.lang.modelapi" version="0" />
     <use id="3a13115c-633c-4c5c-bbcc-75c4219e9555" name="jetbrains.mps.lang.quotation" version="5" />
     <use id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage" version="12" />
@@ -33,7 +33,7 @@
       <concept id="1215607067978" name="jetbrains.mps.lang.test.structure.CheckNodeForErrorMessagesOperation" flags="ng" index="7OXhh">
         <property id="3743352646565420194" name="includeSelf" index="GvXf4" />
       </concept>
-      <concept id="7691029917083872157" name="jetbrains.mps.lang.test.structure.IRuleReference" flags="ng" index="2u4UPC">
+      <concept id="7691029917083872157" name="jetbrains.mps.lang.test.structure.IRuleReference" flags="ngI" index="2u4UPC">
         <reference id="8333855927540250453" name="declaration" index="39XzEq" />
       </concept>
       <concept id="428590876651279930" name="jetbrains.mps.lang.test.structure.NodeTypeSystemErrorCheckOperation" flags="ng" index="2DdRWr">
@@ -84,7 +84,7 @@
       <concept id="1068431474542" name="jetbrains.mps.baseLanguage.structure.VariableDeclaration" flags="ng" index="33uBYm">
         <child id="1068431790190" name="initializer" index="33vP2m" />
       </concept>
-      <concept id="1513279640923991009" name="jetbrains.mps.baseLanguage.structure.IGenericClassCreator" flags="ng" index="366HgL">
+      <concept id="1513279640923991009" name="jetbrains.mps.baseLanguage.structure.IGenericClassCreator" flags="ngI" index="366HgL">
         <property id="1513279640906337053" name="inferTypeParams" index="373rjd" />
       </concept>
       <concept id="1068498886296" name="jetbrains.mps.baseLanguage.structure.VariableReference" flags="nn" index="37vLTw">
@@ -117,7 +117,7 @@
       <concept id="1068581242863" name="jetbrains.mps.baseLanguage.structure.LocalVariableDeclaration" flags="nr" index="3cpWsn" />
       <concept id="1068581517677" name="jetbrains.mps.baseLanguage.structure.VoidType" flags="in" index="3cqZAl" />
       <concept id="1081506773034" name="jetbrains.mps.baseLanguage.structure.LessThanExpression" flags="nn" index="3eOVzh" />
-      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
+      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ngI" index="1ndlxa">
         <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
         <child id="1068499141038" name="actualArgument" index="37wK5m" />
       </concept>
@@ -153,7 +153,7 @@
     </language>
     <language id="443f4c36-fcf5-4eb6-9500-8d06ed259e3e" name="jetbrains.mps.baseLanguage.classifiers">
       <concept id="1205752633985" name="jetbrains.mps.baseLanguage.classifiers.structure.ThisClassifierExpression" flags="nn" index="2WthIp" />
-      <concept id="1205756064662" name="jetbrains.mps.baseLanguage.classifiers.structure.IMemberOperation" flags="ng" index="2WEnae">
+      <concept id="1205756064662" name="jetbrains.mps.baseLanguage.classifiers.structure.IMemberOperation" flags="ngI" index="2WEnae">
         <reference id="1205756909548" name="member" index="2WH_rO" />
       </concept>
       <concept id="1205769003971" name="jetbrains.mps.baseLanguage.classifiers.structure.DefaultClassifierMethodDeclaration" flags="ng" index="2XrIbr" />
@@ -198,7 +198,7 @@
         <child id="1171983854940" name="condition" index="3vFALc" />
       </concept>
       <concept id="1172073500303" name="jetbrains.mps.baseLanguage.unitTest.structure.Message" flags="ng" index="3_1$Yv" />
-      <concept id="1172075514136" name="jetbrains.mps.baseLanguage.unitTest.structure.MessageHolder" flags="ng" index="3_9gw8">
+      <concept id="1172075514136" name="jetbrains.mps.baseLanguage.unitTest.structure.MessageHolder" flags="ngI" index="3_9gw8">
         <child id="1172075534298" name="message" index="3_9lra" />
       </concept>
     </language>
@@ -225,7 +225,7 @@
       <concept id="1133920641626" name="jetbrains.mps.lang.core.structure.BaseConcept" flags="ng" index="2VYdi">
         <child id="5169995583184591170" name="smodelAttribute" index="lGtFl" />
       </concept>
-      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ngI" index="TrEIO">
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
     </language>
diff --git a/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/test.com.mbeddr.mpsutil.collections.runtime.msd b/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/test.com.mbeddr.mpsutil.collections.runtime.msd
index a9b27af7bd1..a48cae490ef 100644
--- a/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/test.com.mbeddr.mpsutil.collections.runtime.msd
+++ b/code/languages/com.mbeddr.mpsutil/solutions/test.com.mbeddr.mpsutil.collections.runtime/test.com.mbeddr.mpsutil.collections.runtime.msd
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<solution name="test.com.mbeddr.mpsutil.collections.runtime" uuid="f88d18b6-41df-491c-ad99-c292037bf751" moduleVersion="0" compileInMPS="true">
+<solution name="test.com.mbeddr.mpsutil.collections.runtime" uuid="f88d18b6-41df-491c-ad99-c292037bf751" moduleVersion="0">
   <models>
     <modelRoot type="default" contentPath="${module}">
       <sourceRoot location="models" />
@@ -10,7 +10,6 @@
       <classes generated="true" path="${module}/classes_gen" />
     </facet>
   </facets>
-  <sourcePath />
   <dependencies>
     <dependency reexport="false">8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)</dependency>
     <dependency reexport="false">ecfb9949-7433-4db5-85de-0f84d172e4ce(de.q60.mps.collections.libs)</dependency>
@@ -26,7 +25,7 @@
     <language slang="l:f3061a53-9226-4cc5-a443-f952ceaf5816:jetbrains.mps.baseLanguage" version="12" />
     <language slang="l:443f4c36-fcf5-4eb6-9500-8d06ed259e3e:jetbrains.mps.baseLanguage.classifiers" version="0" />
     <language slang="l:fd392034-7849-419d-9071-12563d152375:jetbrains.mps.baseLanguage.closures" version="0" />
-    <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="1" />
+    <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="2" />
     <language slang="l:f61473f9-130f-42f6-b98d-6c438812c2f6:jetbrains.mps.baseLanguage.unitTest" version="1" />
     <language slang="l:ceab5195-25ea-4f22-9b92-103b95ca8c0c:jetbrains.mps.lang.core" version="2" />
     <language slang="l:446c26eb-2b7b-4bf0-9b35-f83fa582753e:jetbrains.mps.lang.modelapi" version="0" />