self join many-to-many relationships

[3ricL]

I found no way of doing this (see title)
I tried this, but it doesn't work because there is no way to know which column is the source

object Users : IntIdTable() {
    val name = varchar("name", 50).index()
}
object UsersToUsers : Table() {
    val parent = reference("parent_user_id", Users)
    val child = reference("child_user_id", Users)
}
class User(id: EntityID<Int>) : IntEntity(id) {
    companion object : IntEntityClass<User>(Users)

    var name by Users.name
    var users by User via UsersToUsers //Doesn't work
}

Exception in thread "main" java.lang.IllegalStateException: Table does not reference source
at org.jetbrains.exposed.dao.InnerTableLink.getSourceRefColumn(Entity.kt:124)
at org.jetbrains.exposed.dao.InnerTableLink.setValue(Entity.kt:147)

I don't know if it's the best way, but I would like to specify the "source ref column"
something like this

class User(id: EntityID<Int>) : IntEntity(id) {
    companion object : IntEntityClass<User>(Users)

    var name by Users.name
    var users by User via UsersToUsers.parent
}

The solution am using right now
3ricL@fff5f6f