Merge pull request #38190 from apache/forwardRefCherrypick

[Cherrypick] Support annotationlib in native_type_compatibility (#38188)

Author: Amar3tto

sdks/python/apache_beam/typehints/native_type_compatibility.py

@@ -83,7 +83,12 @@
     collections.abc.Mapping,
 ]
 
-_CONVERTED_MODULES = ('typing', 'collections', 'collections.abc')
+_CONVERTED_MODULES = (
+    'typing',
+    'collections',
+    'collections.abc',
+    'annotationlib',
+)
 
 
 def _get_args(typ):

sdks/python/apache_beam/typehints/native_type_compatibility_test.py

@@ -346,6 +346,10 @@ def test_forward_reference(self):
     self.assertEqual(
         typehints.List[typehints.Any], convert_to_beam_type(list['int']))
 
+  def test_annotationlib_forward_ref(self):
+    beam_type = convert_to_beam_type(dict[str, typing.ForwardRef('foo.Bar')])
+    self.assertEqual(typehints.Dict[str, typehints.Any], beam_type)
+
   def test_convert_nested_to_beam_type(self):
     self.assertEqual(typehints.List[typing.Any], typehints.List[typehints.Any])
     self.assertEqual(