private
enum class ReferenceType {
    SELF_REF,
    TASK_REF,
    PROHIBITED
}


object TaskReferenceCodec : Codec<Task> {

    override suspend fun WriteContext.encode(value: Task) = when {
        value === isolate.owner.delegate ->
            writeEnum(ReferenceType.SELF_REF)

        isTaskReferencesAllowed(value) -> {
            writeEnum(ReferenceType.TASK_REF)
            writeString(value.name)
        }