code: def test_isbuiltin(self):
      self.assertTrue(inspect_utils.isbuiltin(enumerate))
      self.assertTrue(inspect_utils.isbuiltin(eval))
      self.assertTrue(inspect_utils.isbuiltin(float))
      self.assertTrue(inspect_utils.isbuiltin(int))
      self.assertTrue(inspect_utils.isbuiltin(len))
      self.assertTrue(inspect_utils.isbuiltin(range))
      self.assertTrue(inspect_utils.isbuiltin(zip))
      self.assertFalse(inspect_utils.isbuiltin(function_decorator))
  
imports: import abc
  import collections
  import functools
  import textwrap
  import types
  from tensorflow.python import lib
  from tensorflow.python.autograph.pyct import inspect_utils
  from tensorflow.python.autograph.pyct.testing import basic_definitions
  from tensorflow.python.autograph.pyct.testing import decorators
  from tensorflow.python.framework import constant_op
  from tensorflow.python.platform import test
label_desc: Use image node_id 26 for calling the InspectUtilsTest obj's underlying member method code with example usage: obj.test_isbuiltin() without return types