fn parse_request(parts: std::str::SplitWhitespace<'_>) -> RequestParserResult<'_> {

        let mut parts = parts.peekable();

        if parts.peek().is_none() {

            return Err(RequestParserError::UnexpectedEOF);

        }

        // TODO: verify that the features are split by whitespace

        let mut features = Vec::new();

        for feature in parts {

            features.push(feature.to_string());

        }

        Ok((Request::ProtocolDisable(features), ""))

    }

    fn parse_response(

        parts: ResponseAttributes<'_>,

    ) -> Result<Self::Response, ResponseParserError> {

        debug_assert!(parts.is_empty());

        Ok(())

    }