code: def testNoGenericServices(self):
      self.assertTrue(
          hasattr(unittest_no_generic_services_pb2, "TestMessage")
      )
      self.assertTrue(hasattr(unittest_no_generic_services_pb2, "FOO"))
      self.assertTrue(
          hasattr(unittest_no_generic_services_pb2, "test_extension")
      )
  
      # Make sure unittest_no_generic_services_pb2 has no services subclassing
      # Proto2 Service class.
      if hasattr(unittest_no_generic_services_pb2, "TestService"):
          self.assertFalse(
              issubclass(
                  unittest_no_generic_services_pb2.TestService,
                  service.Service,
              )
          )
  
imports: 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_mset_wire_format_pb2
  from google.protobuf import unittest_no_generic_services_pb2
  from google.protobuf import unittest_pb2
  from google.protobuf import service
  from google.protobuf import symbol_database
label_desc: Use image node_id 16 for calling the GeneratorTest obj's underlying member method code with example usage: obj.testNoGenericServices() without return types