docstr: Save holdout predictions to a .csv file, named after :attr:`experiment_id`
docstr_tok: ["Save","holdout","predictions","to","a",".csv","file",",","named","after",":","attr",":","`","experiment_id","`"]
code: def save_result(self):
      """Save holdout predictions to a .csv file, named after :attr:`experiment_id`"""
      self.result.to_csv(
          f"{self.result_path}/{self.experiment_id}.csv",
          **self.to_csv_params,
      )
  
imports: from hyperparameter_hunter.data import OOFDataset, HoldoutDataset, TestDataset
  from hyperparameter_hunter.i_o.exceptions import EnvironmentInactiveError, EnvironmentInvalidError
  from hyperparameter_hunter.i_o.leaderboards import GlobalLeaderboard
  from hyperparameter_hunter.settings import G
  from hyperparameter_hunter.utils.file_utils import write_json, add_to_json, make_dirs, read_json
  from hyperparameter_hunter.utils.file_utils import RetryMakeDirs
  from hyperparameter_hunter.utils.general_utils import subdict
  from abc import ABCMeta, abstractmethod
  from collections import OrderedDict
  from platform import node
  import shutil
  from sys import exc_info
label_desc: Use image node_id 2 for calling the PredictionsHoldoutRecorder obj's underlying member method code with example usage: obj.save_result() without return types