I would like to have some members of KCalendarCore's incidence classes removed during the transition from KF5 to KF6, and I'd like to be sure that the changes won't be missed in the excitement.
Do you have some preferred way to label such changes? For example, is there some `#if` statement that can be wrapped around the code, such that it will be compiled into KF5 but compiled out of KF6?
