class_docstr: Tests for GenomicsReader.
code: def testTwoIteratorsAtTheSameTime(self):
      dreader = DummyReader("100")
      iter2 = iter(dreader)
      for i in range(100):
          self.assertEqual(i, six.next(dreader))
          self.assertEqual(i, six.next(iter2))
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import absltest
  import six
  from third_party.nucleus.io import genomics_reader
  from third_party.nucleus.protos import gff_pb2
  from third_party.nucleus.testing import test_utils
label_desc: Use image node_id 2 for calling the GenomicsReaderTests obj's underlying member method code with example usage: obj.testTwoIteratorsAtTheSameTime() without return types