code: def test_iterator_next_in_loop(self):
      self.assertFunctionMatchesEager(iterator_next_in_loop, self.ds, 7)
  
imports: import tensorflow
  from tensorflow.python.autograph.tests import reference_test_base
label_desc: Use image node_id 14 for calling the ReferenceTest obj's underlying member method code with example usage: obj.test_iterator_next_in_loop() without return types