@classmethod
def add_options(cls, parser: 'flake8.options.manager.OptionManager') -> None:
    parser.add_option('--mypy-config', parse_from_config=True, help='path to a custom mypy configuration file')
@classmethod
def add_options(cls, parser: 'flake8.options.manager.OptionManager') -> None:
    parser.add_option('--mypy-config', parse_from_config=True, help='path to a custom mypy configuration file')