static StreamDecoderFactory snappy() {
        return StreamDecoderFactories.SNAPPY;
    }
Returns the {@link StreamDecoderFactory} for
<a href="https://github.com/google/snappy/blob/27f34a580be4a3becf5f8c0cba13433f53c21337/framing_format.txt">"x-snappy-framed"</a>
content encoding.
core/src/main/java/com/linecorp/armeria/common/encoding/StreamDecoderFactory.java