code: def setUpClass(self):
      scikit_data = load_boston()
      feature_names = scikit_data.feature_names
  
      scikit_model = LinearRegression()
      scikit_model.fit(scikit_data["data"], scikit_data["target"])
  
      # Save the data and the model
      self.scikit_data = scikit_data
      self.scikit_model = scikit_model
  
file_path: coremltools/coremltools/test/sklearn_tests/test_utils.py
imports: import unittest
  from coremltools._deps import _HAS_SKLEARN
  from coremltools.models import MLModel
  from coremltools.models.utils import _is_macos, _macos_version, rename_feature
label_desc: Use image node_id 1 for calling the PipeLineRenameTests obj's underlying member method code with example usage: obj.setUpClass() without return types