code: def test_deletion_total(self):
      def test_fn(a):
          if a:
              a = 0
          else:
              a = 1
          del a
          return a
  
      node = self._parse_and_analyze(test_fn)
      fn_body = node.body
  
      use = fn_body[2].value
      self.assertHasDefs(use, 0)
  
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 reaching_definitions
  from tensorflow.python.platform import test
label_desc: Use image node_id 13 for calling the ReachingDefinitionsAnalyzerTest obj's underlying member method code with example usage: obj.test_deletion_total() and returns: a