code: def test_live_out_nested_functions_hidden_by_argument(self):
      def test_fn(b):
          def foo(a):
              return a
  
          if b:
              a = []  # pylint:disable=unused-variable
  
          return foo
  
      node = self._parse_and_analyze(test_fn)
      fn_body = node.body
  
      self.assertHasLiveOut(fn_body[1], ("foo"))
  
imports: from tensorflow.python.autograph.pyct import anno
  from tensorflow.python.autograph.pyct import cfg
  from tensorflow.python.autograph.pyct import naming
  from tensorflow.python.autograph.pyct import parser
  from tensorflow.python.autograph.pyct import qual_names
  from tensorflow.python.autograph.pyct import transformer
  from tensorflow.python.autograph.pyct.static_analysis import activity
  from tensorflow.python.autograph.pyct.static_analysis import liveness
  from tensorflow.python.autograph.pyct.static_analysis import reaching_fndefs
  from tensorflow.python.platform import test
label_desc: Use image node_id 12 for calling the LivenessAnalyzerTest obj's underlying member method code with example usage: obj.test_live_out_nested_functions_hidden_by_argument() and returns: foo, a