public byte[] getBytes() {
        ByteBuffer buffer = ByteBuffer.allocate(data.length + 16);
        buffer.put(this.streamId.getBytes());
        buffer.putLong(this.data.length);
        buffer.put(data);
        return buffer.array();
    }
@return data to be passed to encoder module
streamId: 8 bytes
dataLength: 8 bytes
data: x bytes
src/main/java/core/packetproxy/quic/value/QuicMessage.java