// Shorthand to add entities to the SortedList->LinkedList structure
 private void addEntity(TabEntity entity, SortedList <float, LinkedList <TabEntity> > entities)
 {
     if (!entities.ContainsKey(entity.Time))
     {
         entities[entity.Time] = new LinkedList <TabEntity>();
     }
     entities[entity.Time].AddLast(entity);
 }
 // Shorthand to add entities to the SortedList->LinkedList structure
 private void addEntity(TabEntity entity, SortedList<float, LinkedList<TabEntity>> entities)
 {
     if (!entities.ContainsKey(entity.Time))
         entities[entity.Time] = new LinkedList<TabEntity>();
     entities[entity.Time].AddLast(entity);
 }