code: def testOptions(self):
      proto = unittest_mset_wire_format_pb2.TestMessageSet()
      self.assertTrue(
          proto.DESCRIPTOR.GetOptions().message_set_wire_format
      )
  
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 8 for calling the GeneratorTest obj's underlying member method code with example usage: obj.testOptions() without return types