code: def test_objectmapper(self):
      df = pdml.ModelFrame([])
      self.assertIs(df.neural_network.BernoulliRBM, nn.BernoulliRBM)
      self.assertIs(df.neural_network.MLPClassifier, nn.MLPClassifier)
      self.assertIs(df.neural_network.MLPRegressor, nn.MLPRegressor)
  
file_path: pandas-ml/pandas_ml/skaccessors/test/test_neural_network.py
imports: import pytest
  import sklearn.datasets
  import sklearn.neural_network
  import pandas_ml
  import pandas_ml.util.testing
label_desc: Use image node_id 1 for calling the TestNeuralNtwork obj's underlying member method code with example usage: obj.test_objectmapper() without return types