code: def testExtensionScope(self):
      self.assertEqual(
          unittest_pb2.optional_int32_extension.extension_scope, None
      )
      self.assertEqual(
          unittest_pb2.TestRequired.single.extension_scope,
          unittest_pb2.TestRequired.DESCRIPTOR,
      )
  
imports: import unittest
  from google.protobuf.internal import test_bad_identifiers_pb2
  from google.protobuf import unittest_custom_options_pb2
  from google.protobuf import unittest_import_pb2
  from google.protobuf import unittest_import_public_pb2
  from google.protobuf import unittest_mset_pb2
  from google.protobuf import unittest_pb2
  from google.protobuf import unittest_no_generic_services_pb2
  from google.protobuf import service
label_desc: Use image node_id 6 for calling the GeneratorTest obj's underlying member method code with example usage: obj.testExtensionScope() without return types