code: def test_objectmapper(self):
      df = pdml.ModelFrame([])
      self.assertIs(df.xgboost.XGBRegressor, xgb.XGBRegressor)
      self.assertIs(df.xgboost.XGBClassifier, xgb.XGBClassifier)
  
file_path: pandas-ml/pandas_ml/xgboost/test/test_base.py
imports: import matplotlib
  import numpy
  import pandas
  import pandas_ml
  import pandas_ml.util.testing
  import sklearn.datasets
  import xgboost
label_desc: Use image node_id 1 for calling the TestXGBoost obj's underlying member method code with example usage: obj.test_objectmapper() without return types