code: public void push(Event event, int priority) {
  		EventQueueDefinition def = getQueueForClass(event.getClass());
  		if (def != null) {
  			def.push(event, priority);
  		}
  	}
docs: Pushes the given event to the bus, but only notifies those with a
  priority flag greater than or equal to the given {@code priority}. Note
  that the default priority is {@link EventPriority#NORMAL} (0).
  @see #push(Event)
  @see EventPriority
  @param event the event to push
  @param priority the minimum event priority