code: @Pure
  	public Iterator<BusHub> busHubIterator() {
  		if (this.hubs == null) {
  			return Collections.emptyIterator();
  		}
  		return Iterators.unmodifiableIterator(this.hubs.iterator());
  	}
docs: Replies the hubs in which this bus stop is located.
  
  @return the hubs