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mobile/lib/models/search/hierarchical/hierarchical_search_filter.dart

@@ -5,6 +5,9 @@ int kMostRelevantFilter = 10000;
 int kLeastRelevantFilter = -1;
 
 abstract class HierarchicalSearchFilter {
+  //These matches should be from list of all files in db and not just all files in
+  //gallery if we plan to use this cache for faster filtering when adding/removing
+  //applied filters.
   final Set<int> matchedUploadedIDs = {};
 
   String name();