code: def testBeamExecutorSpecCopy(self):
      spec = executor_spec.BeamExecutorSpec(_DummyExecutor)
      spec.add_extra_flags("a")
      spec.add_beam_pipeline_args("b")
      spec_copy = spec.copy()
      del spec
      self.assertProtoEquals(
          """
          python_executor_spec: {
              class_path: "__main__._DummyExecutor"
              extra_flags: "a"
          }
          beam_pipeline_args: "b"
          beam_pipeline_args_placeholders {
            value {
              string_value: "b"
            }
          }
          """,
          spec_copy.encode(),
      )
  
file_path: tfx/tfx/dsl/components/base/executor_spec_test.py
imports: import tensorflow
  from tfx.dsl.components.base import base_executor
  from tfx.dsl.components.base import executor_spec
label_desc: Use image node_id 3 for calling the ExecutorSpecTest obj's underlying member method code with example usage: obj.testBeamExecutorSpecCopy() without return types