void addBusHalt(BusItineraryHalt halt) {
		if (this.halts == null) {
			this.halts = new WeakArrayList<>();
		}
		this.halts.add(halt);
	}
void addBusHalt ( BusItineraryHalt halt ) { if ( this . halts == null ) { this . halts = new WeakArrayList < > ( ) ; } this . halts . add ( halt ) ; }
Add a bus halt reference.

@param halt the halt.