public override IByteBuffer WriteHeader(IByteBuffer header, PacketRegistration packet, IByteBuffer data)
{
IByteBuffer opcodeBuffer = Unpooled.Buffer(5);
ByteBufUtils.WriteVarInt(opcodeBuffer, packet.Opcode);
ByteBufUtils.WriteVarInt(header, opcodeBuffer.ReadableBytes + data.ReadableBytes);
opcodeBuffer.Release();
ByteBufUtils.WriteVarInt(header, packet.Opcode);
return(header);
}