code: def report_final_result(metric):
      
      assert _params is not None, 'nni.get_next_parameter() needs to be called before report_final_result'
      metric = json_tricks.dumps({
          'parameter_id': _params['parameter_id'],
          'trial_job_id': trial_env_vars.NNI_TRIAL_JOB_ID,
          'type': 'FINAL',
          'sequence': 0,  # TODO: may be unnecessary
          'value': metric
      })
      platform.send_metric(metric)
docs: Reports final result to tuner.
      metric: serializable object.