code: def testBuildKerasModel(self):
      built_model = model._build_keras_model(
          ["foo", "bar"]
      )  # pylint: disable=protected-access
      self.assertEqual(len(built_model.inputs), 2)
  
imports: import tensorflow
  from tfx.experimental.templates.penguin.models import model
label_desc: Use image node_id 1 for calling the ModelTest obj's underlying member method code with example usage: obj.testBuildKerasModel() without return types