[Flink] licence

runners/flink/src/main/java/org/apache/beam/runners/flink/adapter/FlinkKey.java

@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.apache.beam.runners.flink.adapter;
 
 import org.apache.beam.runners.flink.translation.types.CoderTypeSerializer;

runners/flink/src/test/java/org/apache/beam/runners/flink/adapter/FlinkKeyTest.java

@@ -1,26 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.apache.beam.runners.flink.adapter;
 
-import com.google.common.collect.Range;
 import org.apache.beam.sdk.coders.VarIntCoder;
 import org.apache.flink.api.common.typeinfo.TypeInformation;
-import org.apache.flink.api.common.typeutils.TypeSerializer;
 import org.apache.flink.api.java.tuple.Tuple2;
 import org.apache.flink.api.java.typeutils.GenericTypeInfo;
 import org.apache.flink.api.java.typeutils.TypeExtractor;
 import org.apache.flink.api.java.typeutils.ValueTypeInfo;
 import org.apache.flink.util.MathUtils;
-import org.hamcrest.Matchers;
-import org.hamcrest.core.IsEqual;
 import org.hamcrest.core.IsInstanceOf;
 import org.junit.Test;
+
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 import java.util.Set;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
-import java.util.stream.Stream;
 
-import static org.hamcrest.MatcherAssert.*;
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.Matchers.greaterThan;
 import static org.hamcrest.Matchers.not;