token! {
/// A content coding, used in the `Accept-Encoding` and `Content-Encoding` headers.
ContentCoding => {
/// The Brotli coding, as specified in [RFC7932].
///
/// [RFC7932]: https://tools.ietf.org/html/rfc7932
BROTLI => "br" => [],
/// The Gzip coding, as specified in [RFC7230].
///
/// [RFC7230]: https://tools.ietf.org/html/rfc7230#section-4.2.3
GZIP => "gzip" => ["x-gzip"],
/// The Deflate coding, as specified in [RFC7230].
///
/// [RFC7230]: https://tools.ietf.org/html/rfc7230#section-4.2.2
DEFLATE => "deflate" => [],
/// The Compress coding, as specified in [RFC7230].
///
/// [RFC7230]: https://tools.ietf.org/html/rfc7230#section-4.2.1
COMPRESS => "compress" => ["x-compress"],
/// The identity coding.
IDENTITY => "identity" => [],
/// A wildcard, used in the `Accept-Encoding` header to indicate that all codings are acceptable.
STAR => "*" => [],
}
}