code: def setUp(self):
      out_fname = test_utils.test_tmpfile("output.gff")
      self.writer = gff_writer.GffWriter.to_file(
          out_fname, gff_pb2.GffHeader(), gff_pb2.GffWriterOptions()
      )
      self.expected_gff_content = open(
          test_utils.genomics_core_testdata("test_features.gff")
      ).readlines()
      self.header = gff_pb2.GffHeader(
          sequence_regions=[ranges.make_range("ctg123", 0, 1497228)]
      )
      self.record = gff_pb2.GffRecord(
          range=ranges.make_range("ctg123", 1000, 1100)
      )
  
file_path: deepvariant/third_party/nucleus/io/python/gff_writer_wrap_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 tfrecord
  from third_party.nucleus.io.python import gff_writer
  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 1 for calling the WrapGffWriterTest obj's underlying member method code with example usage: obj.setUp() without return types