code: @Pure
  	public Iterator<BusStop> getBusStopsIn(Rectangle2afp<?, ?, ?, ?, ?, ?> clipBounds) {
  		return Iterators.unmodifiableIterator(
  				this.validBusStops.iterator(clipBounds));
  	}
docs: Replies the set of bus stops that have an intersection with the specified rectangle.
  
  <p>This function replies the bus stops with a broad-first iteration on the elements' tree.
  
  @param clipBounds is the bounds outside which the bus stops will not be replied
  @return the bus stops inside the specified bounds.