code: def __go_to_working_dir(self):
      current = os.getcwd()
      os.chdir(self._working_dir)
      return current
  
imports: from __future__ import print_function
  import os
  from copy import copy
  from enum import Enum
  from ..None import CatBoostError, CatBoost
  from .evaluation_result import EvaluationResults, MetricEvaluationResult
  from ._fold_models_handler import FoldModelsHandler
  from ._readers import _SimpleStreamingFileReader
  from ._splitter import _Splitter
  from .execution_case import ExecutionCase
  from .factor_utils import LabelMode, FactorUtils
label_desc: Use image node_id 2 for calling the CatboostEvaluation obj's underlying member method code with example usage: obj.__go_to_working_dir() and returns: current