class_docstr: Experiment which uses one experiment for the optimization,
  and another for the evaluation
code: def _delegate_to_experiment(
      self, *args: tp.Any, **kwargs: tp.Any
  ) -> tp.Loss:
      return self._experiment(*args, **kwargs)
  
file_path: nevergrad/nevergrad/functions/helpers.py
imports: import os
  import nevergrad.common.typing
  from nevergrad.parametrization import parameter
  from nevergrad.optimization import multiobjective
  from .None import base
label_desc: Use image node_id 2 for calling the SpecialEvaluationExperiment obj's underlying member method code with example usage: obj._delegate_to_experiment() and returns: self