code: def test_while_loop(self):
      def f(x):
          v = []
          while x > 0:
              x -= 1
              if x % 2 == 0:
                  break
              v.append(x)
          return v
  
      self.assertTransformedEquivalent(f, 0)
      self.assertTransformedEquivalent(f, 1)
      self.assertTransformedEquivalent(f, 4)
  
file_path: tensorflow-upstream/tensorflow/python/autograph/converters/break_statements_test.py
imports: from tensorflow.python.autograph.converters import break_statements
  from tensorflow.python.autograph.core import converter_testing
  from tensorflow.python.autograph.pyct import anno
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the BreakCanonicalizationTest obj's underlying member method code with example usage: obj.test_while_loop() and returns: v