code: def testUnwrapReturnsUndecoratedFunctionAsTarget(self):
      _, target = tf_decorator.unwrap(test_function)
      self.assertIs(test_function, target)
  
imports: import functools
  import inspect
  from tensorflow.python.platform import test
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.util import tf_decorator
  from tensorflow.python.util import tf_inspect
label_desc: Use image node_id 2 for calling the TfDecoratorUnwrapTest obj's underlying member method code with example usage: obj.testUnwrapReturnsUndecoratedFunctionAsTarget() without return types