getEntryWithValue method
Return any key:set
entry where the value exists in the set.
If that entry doesn't exist, return null
.
Implementation
MapEntry<K, ISet<V>>? getEntryWithValue(V value) {
for (MapEntry<K, ISet<V>> entry in _mapOfSets.entries) {
var set = entry.value;
if (set.contains(value)) return entry;
}
return null;
}