currentMonthFlow
        .flatMapMerge {calendarDataForMonth(it)}
        .flatMapMerge { it.asFlow() }
        .map { CalendarItem(it) }
        .flatMapMerge {
            if (it.needSplit()) {
                //slitting it
                listOf(it1, it2, i3).asFlow()
            } else {
                listOf(it).asFlow()
            }
        }
        .toList().associateBy ( { it.date }, { it })

asLivedata()

currentMonthFlow.map {  ...associateBy }