code: def test_end2end(self):
      FLAGS.ref = testdata.CHR20_FASTA
      FLAGS.examples = (
          testdata.GOLDEN_TRAINING_EXAMPLES + "@3"
      )  # Sharded.
      FLAGS.output_vcf = test_utils.test_tmpfile("examples_to_vcf.vcf")
  
      labeled_examples_to_vcf.main(0)
  
      self.assertEqual(
          open(FLAGS.output_vcf).readlines(),
          open(
              testdata.deepvariant_testdata(
                  "golden.training_examples.vcf"
              )
          ).readlines(),
      )
  
file_path: deepvariant/deepvariant/labeler/labeled_examples_to_vcf_test.py
imports: from absl import flags
  from absl.testing import absltest
  from absl.testing import flagsaver
  from absl.testing import parameterized
  from third_party.nucleus.io import vcf
  from third_party.nucleus.testing import test_utils
  from deepvariant import testdata
  from deepvariant.labeler import labeled_examples_to_vcf
label_desc: Use image node_id 1 for calling the ExamplesToVCFUnitTest obj's underlying member method code with example usage: obj.test_end2end() without return types