code: def _initiate_exp_object(self, genetic_regression_exp_object):
      self.exp = genetic_regression_exp_object
  
imports: import pytest
  import sklearn
  from raiutils.exceptions import UserConfigValidationException
  import dice_ml
  from dice_ml.utils import helpers
  from dice_ml.utils.neuralnetworks import MulticlassNetwork
label_desc: Use image node_id 1 for calling the TestDiceGeneticRegressionMethods obj's underlying member method code with example usage: obj._initiate_exp_object(genetic_regression_exp_object) without return types