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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def errors(self, errors: List[str], code: Union[int, Tuple[int, str, str]] = HTTPStatus.BAD_REQUEST, key: str = 'errors', headers: Optional[Dict[str, str]] = None, ):
 """ Convenience method to return errors as json. :param errors: The list of errors. :param code: The HTTP status code. :param key: The key to return the errors under. :param headers: Any optional headers. """

        return jsonify({key: errors}), code, headers or {}