Why Jetty Client is only having org.eclipse.jetty.client.GZIPContentDecoder and not any other decoders for formats like DEFLATE and Brotli?
Gzip is a well spec'd standard that only has 1 implementation and is supported by the entire industry.
Deflate is deprecated by the industry as a whole. Mainly because it has at least 3 (incompatible) standards for it.
Brotli isn't implemented in pure Java (yet).