AtomicUpdate does not accept Case Class

[mefellows]

This is more of a question than anything.

Given that save is now deprecated and has been moved to AtomicUpdate.atomicUpsert etc., is there a way to update an existing Entity without marshalling to a BSONDocument manually? It would seem to me that without this feature the whole CASE CLASS <-> JSON <-> BSON conversion value proposition breaks down a bit.

i.e. Rather than (from AtomicUpdateSpec.scala):

    repositoryWithIdOverride.atomicUpsert(findByField(testObj.name),
      BSONDocument(
        "$setOnInsert" -> BSONDocument("_id" -> testObj.id),
        "$set" -> BSONDocument("name" -> testObj.name),
        "$set" -> BSONDocument("someOtherField" -> testObj.someOtherField)
      ), idAttribute)

something like would be more idiomatic for this project:

val myObject = MyObject(id, "foo")
repositoryWithIdOverride.atomicUpsert(myObject)

Or is this just wishful thinking on my part?