func (r *ReadBuffer) ReadUint64() uint64 {
	if b := r.ReadBytes(8); b != nil {
		return binary.BigEndian.Uint64(b)
	}

	return 0
}
func (r *ReadBuffer) ReadUint64() uint64 {
	if b := r.ReadBytes(8); b != nil {
		return binary.BigEndian.Uint64(b)
	}

	return 0
}
// ReadUint64 returns the next value in the buffer as a uint64