code: def test_conditional(self):
      def test_fn(a, b):
          a = []
          if b:
              a = []
          return a
  
      node = self._parse_and_analyze(test_fn)
      fn_body = node.body
  
      self.assertHasDefs(fn_body[0].targets[0], 1)
      self.assertHasDefs(fn_body[1].test, 1)
      self.assertHasDefs(fn_body[1].body[0].targets[0], 1)
      self.assertHasDefs(fn_body[2].value, 2)
  
      self.assertHasDefinedIn(fn_body[1], ("a", "b"))
  
imports: import unittest
  from nvidia.dali._autograph.pyct import anno
  from nvidia.dali._autograph.pyct import cfg
  from nvidia.dali._autograph.pyct import naming
  from nvidia.dali._autograph.pyct import parser
  from nvidia.dali._autograph.pyct import qual_names
  from nvidia.dali._autograph.pyct import transformer
  from nvidia.dali._autograph.pyct.static_analysis import activity
  from nvidia.dali._autograph.pyct.static_analysis import reaching_definitions
label_desc: Use image node_id 1 for calling the ReachingDefinitionsAnalyzerTest obj's underlying member method code with example usage: obj.test_conditional() and returns: a