code: void cleanup(Http2Stream stream, EmbeddedChannel compressor) {
          if (compressor.finish()) {
              for (;;) {
                  final ByteBuf buf = compressor.readOutbound();
                  if (buf == null) {
                      break;
                  }
  
                  buf.release();
              }
          }
          stream.removeProperty(propertyKey);
      }
docs: Release remaining content from {@link EmbeddedChannel} and remove the compressor from the {@link Http2Stream}.
  
  @param stream The stream for which {@code compressor} is the compressor for
  @param compressor The compressor for {@code stream}