public CityModelViewOptions(bool defaultValue = false) : base(defaultValue)
 {
     RegionKey            = defaultValue;
     RegionName           = defaultValue;
     Coords               = defaultValue;
     Levels               = defaultValue;
     Connectors           = defaultValue;
     ConnectorViewOptions = new ConnectorModelViewOptions(defaultValue);
 }
 private void Init(bool defaultValue = false)
 {
     Cities               = defaultValue;
     Regions              = defaultValue;
     Connectors           = defaultValue;
     CityViewOptions      = new CityModelViewOptions(defaultValue);
     ConnectorViewOptions = new ConnectorModelViewOptions(defaultValue);
     RegionViewOptions    = new RegionModelViewOptions(defaultValue);
 }