code: def test_get_field_mask_paths_no_changes(self):
      execution = _create_test_execution(
          metadata_store_pb2.Execution.RUNNING,
          {"unchanged": 123},
          {"node_states": '{"importer": {"state": "running"}}'},
      )
      execution_copy = _create_test_execution(
          metadata_store_pb2.Execution.RUNNING,
          {"unchanged": 123},
          {"node_states": '{"importer": {"state": "running"}}'},
      )
      want_field_paths = [
          f.name
          for f in metadata_store_pb2.Execution.DESCRIPTOR.fields
          if f.name not in ["properties", "custom_properties"]
      ]
      self.assertCountEqual(
          mlmd_state.get_field_mask_paths(execution, execution_copy),
          want_field_paths,
      )
  
imports: from concurrent import futures
  import os
  import threading
  import tensorflow
  from tfx.orchestration import metadata
  from tfx.orchestration.experimental.core import mlmd_state
  from tfx.orchestration.experimental.core import test_utils
  from ml_metadata.proto import metadata_store_pb2
label_desc: Use image node_id 6 for calling the MlmdStateTest obj's underlying member method code with example usage: obj.test_get_field_mask_paths_no_changes() without return types