code: def testUnwrapContextManager(self):
      decorators, target = tf_decorator.unwrap(test_params_and_defaults)
      self.assertEqual(1, len(decorators))
      self.assertTrue(
          isinstance(decorators[0], tf_decorator.TFDecorator)
      )
      self.assertEqual("contextmanager", decorators[0].decorator_name)
      self.assertFalse(isinstance(target, tf_decorator.TFDecorator))
  
file_path: tensorflow/tensorflow/python/util/tf_contextlib_test.py
imports: from tensorflow.python.platform import test
  from tensorflow.python.util import tf_contextlib
  from tensorflow.python.util import tf_decorator
  from tensorflow.python.util import tf_inspect
label_desc: Use image node_id 6 for calling the TfContextlibTest obj's underlying member method code with example usage: obj.testUnwrapContextManager() without return types