code: def test_native_gff_header(self, gff_filename):
      gff_path = test_utils.genomics_core_testdata(gff_filename)
      with gff.GffReader(gff_path) as reader:
          self.assertEqual(
              EXPECTED_GFF_VERSION, reader.header.gff_version
          )
      with gff.NativeGffReader(gff_path) as native_reader:
          self.assertEqual(
              EXPECTED_GFF_VERSION, native_reader.header.gff_version
          )
  
file_path: deepvariant/third_party/nucleus/io/gff_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import absltest
  from absl.testing import parameterized
  from third_party.nucleus.io import gff
  from third_party.nucleus.io import tfrecord
  from third_party.nucleus.protos import gff_pb2
  from third_party.nucleus.testing import test_utils
  from third_party.nucleus.util import ranges
label_desc: Use image node_id 2 for calling the GffReaderTests obj's underlying member method code with example usage: obj.test_native_gff_header(gff_filename) without return types