@Override
    public void onUnknownFrame(ChannelHandlerContext ctx, byte frameType, int streamId, Http2Flags flags,
                               ByteBuf payload) {}
Returns {@code true} if a connection has reached its lifespan
and the connection did not receive or send a GOAWAY frame.
core/src/main/java/com/linecorp/armeria/client/Http2ResponseDecoder.java