@JvmStatic
    fun decodeLength(bytes: ByteArray): Pair<Int, ByteArray> {
        var newBytes = bytes
        var len = 0
        var size = 0
        while (true) {
            val elem = newBytes.first().toInt().also { newBytes = newBytes.drop(1).toByteArray() }
            len = len or (elem and 0x7f) shl (size * 7)
            size += 1
            if ((elem and 0x80) == 0) {
                break
            }
        }
        return len to newBytes
    }