robotlegs/robotlegs-framework — comment on commit fa01f68d42f699177220555ee8b35097f45228d4
File: src/org/robotlegs/v2/extensions/mediatorMap/impl/NullV1MediatorMap.as line 14
By darscan:

If the IMediatorMap that they pull in has an implementation that uses v2 under the hood then there is no problem.