difference method
      
  
EnumSet<RouteMapObjectPermanentDisplayFlag> 
difference(
    
    
- EnumSet<RouteMapObjectPermanentDisplayFlag> other
Implementation
@override
EnumSet<RouteMapObjectPermanentDisplayFlag> difference(EnumSet<RouteMapObjectPermanentDisplayFlag> other) =>
    RouteMapObjectPermanentDisplayFlagEnumSet.fromRawValue(this.rawValue & ~other.rawValue);