added next to cross_sync

google/cloud/bigtable/data/_sync/cross_sync/cross_sync.py

@@ -105,6 +105,10 @@ class CrossSync(metaclass=MappingMeta):
         PytestFixture.decorator
     )  # decorate test methods to run with pytest fixture
 
+    @classmethod
+    def next(cls, iterable):
+        return iterable.__anext__()
+
     @classmethod
     def Mock(cls, *args, **kwargs):
         """
@@ -230,7 +234,7 @@ def verify_async_event_loop() -> None:
         asyncio.get_running_loop()
 
     @staticmethod
-    def rm_aio(statement: Any) -> Any:
+    def rm_aio(statement: T) -> T:
         """
         Used to annotate regions of the code containing async keywords to strip
 
@@ -247,6 +251,7 @@ class _Sync_Impl(metaclass=MappingMeta):
         is_async = False
 
         sleep = time.sleep
+        next = next
         retry_target = retries.retry_target
         retry_target_stream = retries.retry_target_stream
         Retry = retries.Retry