pub(super) fn apply_request(
user_rooms: &HashMap<OwnedRoomId, RoomInfo>,
req_lists: &BTreeMap<String, List>,
req_subscriptions: &BTreeMap<OwnedRoomId, RoomSubscription>,
) -> Result<FilteredRooms, SyncV4Error>Expand description
Applies a request’s lists and subscription to the list of rooms the user is or has been in.