object TimeStampAsLongSerializer : KSerializer<Timestamp> {
    override val descriptor: SerialDescriptor = PrimitiveSerialDescriptor("Date", PrimitiveKind.LONG)
    override fun serialize(encoder: Encoder, value: Timestamp) {
        encoder.encodeLong(value.timeInMillis)
    }

    override fun deserialize(decoder: Decoder): Timestamp {
        return Timestamp(decoder.decodeLong())
    }
}