class_docstr: Callable objective function to be used with optuna.
class_docstr_tok: ["Callable","objective","function","to","be","used","with","optuna","."]
code: def all_results(self):
      return self._models_results
  
imports: import dataclasses
  import logging
  import pickle
  import time
  from pathlib import Path
  from typing import Optional, Union
  import numpy
  import pandas
  from hpt.suggest import suggest_callable_hyperparams
  from omegaconf import DictConfig, OmegaConf
  from optuna.trial import BaseTrial
  from ..evaluation import evaluate_fairness, evaluate_performance
  from ..methods import InProcessing, PostProcessing, PreProcessing
  from ..methods.postprocessing.threshold import Threshold
label_desc: Use image node_id 3 for calling the ObjectiveFunction obj's underlying member method code with example usage: obj.all_results() and returns: self