class AbsIntegerEncoder extends
    MessageToMessageEncoder<ByteBuf> {
    @Override
    protected void encode(ChannelHandlerContext channelHandlerContext,
        ByteBuf in, List<Object> out) throws Exception {<FILL_FUNCTION_BODY>}
}

        while (in.readableBytes() >= 4) {
            int value = Math.abs(in.readInt());
            out.add(value);
        }
    
<no_super_class>