flushAllTrackFromQueue method
Remove all track elements in the pool Return an id for the removed element to remove them in database
Implementation
List<String> flushAllTrackFromQueue() {
List<String> ret = [];
Flagship.logger(
Level.DEBUG, "Remove all visitorId's track elemets from the pool");
ret = fsQueue.map((e) => e.id).toList();
fsQueue.clear();
return ret;
}