code: def test_iterator_next(self):
      strat, ds = _distributed_dataset()
      self.assertFunctionMatchesEager(iterator_next, strat, ds)
  
imports: import itertools
  from absl.testing import parameterized
  import tensorflow
  from tensorflow.python.autograph.tests import reference_test_base
label_desc: Use image node_id 2 for calling the ReferenceTest obj's underlying member method code with example usage: obj.test_iterator_next() without return types