code: def __enter__(self):
      return self._cm_trial
  
imports: from __future__ import annotations
  import copy
  import hashlib
  import logging
  import os
  import warnings
  from datetime import timedelta
  from orion.core.utils.exceptions import InvalidResult
  from orion.core.utils.flatten import unflatten
label_desc: Use image node_id 4 for calling the TrialCM obj's underlying member method code with example usage: obj.__enter__() and returns: self