code: def testCallingADecoratedFunctionCallsTheTarget(self):
      self.assertEqual((2 + 1) * 2, test_decorated_function(2))
  
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 9 for calling the TfDecoratorTest obj's underlying member method code with example usage: obj.testCallingADecoratedFunctionCallsTheTarget() without return types