code: def tox_addoption(parser):
      
      parser.add_argument(
          '--travis-after', dest='travis_after', action='store_true',
          help='Exit successfully after all Travis jobs complete successfully.')
  
      if 'TRAVIS' in os.environ:
          pypy_version_monkeypatch()
          subcommand_test_monkeypatch(tox_subcommand_test_post)
docs: Add arguments and needed monkeypatches.