code: def _transform_with_mock(self, f):
      mock = MockConvertedCall()
      tr = self.transform(
          f,
          (functions, call_trees),
          ag_overrides={"converted_call": mock},
      )
      return tr, mock
  
imports: import types
  from tensorflow.python.autograph.converters import call_trees
  from tensorflow.python.autograph.converters import functions
  from tensorflow.python.autograph.core import converter_testing
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the CallTreesTest obj's underlying member method code with example usage: obj._transform_with_mock(f) and returns: tr,  mock