[SAGA-RG] Question about saga::attribute and saga::async

Hi, I noticed that version 1.0 RC 5 of the SAGA document specifies that the saga::attribute interface now implements the saga::async interface. I assume that this means that there must be task- and async versions of the saga::attribute methods. But this also means that several other classes now must implement saga::async (because they implement saga::attribute). For instance, the class "metric" in package saga.monitoring, should that now have async and task versions of the add_callback, remove_callback and fire methods? I guess not, but since it now implements saga::async, should it? Ceriel Jacobs