code: def experimental_type_proto(cls):
      return serialization_test_pb2.MyCompositeRepresentation
  
imports: from tensorflow.core.function.trace_type import serialization
  from tensorflow.core.function.trace_type import serialization_test_pb2
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the MyCompositeClass obj's underlying member method code with example usage: obj.experimental_type_proto(cls) and returns: serialization_test_pb2