return decodeValue().toProvider()
    }

    suspend fun ReadContext.decodeValue(): ValueSupplier.ExecutionTimeValue<*> =
        when (readByte()) {
            1.toByte() -> ValueSupplier.ExecutionTimeValue.missing<Any>()
            2.toByte() -> ValueSupplier.ExecutionTimeValue.ofNullable(read()) // nullable because serialization may replace value with null, e.g. when using provider of Task