class_docstr: Unit test class for testing scikit-learn converter.
class_docstr_tok: ["Unit","test","class","for","testing","scikit-learn","converter","."]
docstr: Set up the unit test by loading common utilities.
docstr_tok: ["Set","up","the","unit","test","by","loading","common","utilities","."]
code: def setUpClass(self):
      """
      Set up the unit test by loading common utilities.
      """
  
imports: import unittest
  from coremltools._deps import _HAS_KERAS2_TF
  from coremltools.proto import Model_pb2
  from coremltools.proto import FeatureTypes_pb2
  from coremltools.proto import NeuralNetwork_pb2
  import pytest
label_desc: Use image node_id 1 for calling the KerasSingleLayerTest obj's underlying member method code with example usage: obj.setUpClass() without return types