@Singleton
    TypeConverter<CompositeByteBuf, byte[]> compositeByteBufTypeConverter() {
        return (object, targetType, context) -> Optional.of(ByteBufUtil.getBytes(object));
    }
@ Singleton TypeConverter < CompositeByteBuf , byte [ ] > compositeByteBufTypeConverter ( ) { return ( object , targetType , context ) -> Optional . of ( ByteBufUtil . getBytes ( object ) ) ; }
@return A converter that converts composite bytebufs to byte arrays