code: def test_object_method(self):
      class TestClass(object):
          def other_method(self, x):
              return x + 20
  
          def test_method(self, a):
              return self.other_method(a) + 300
  
      tc = TestClass()
      tr, mock = self._transform_with_mock(tc.test_method)
  
      self.assertEqual(321, tr(tc, 1))
      self.assertListEqual(mock.calls, [((1,), None)])
  
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 17 for calling the CallTreesTest obj's underlying member method code with example usage: obj.test_object_method() and returns: unknown, unknown