         SLOWEST = 5
     }
     
-    init(){}
     
     private var enableLogging           : Bool                      = false
     private var animateMarkerPosition   : CLLocationCoordinate2D?   = nil

    private var isAnimated              : Bool                      = false
    private var directionDelegate       : DirectionDelegate?        = nil
    private var animationDelegate       : AnimationDelegate?        = nil
    
    func request(beginLocation : CLLocationCoordinate2D, endLocation : CLLocationCoordinate2D, mode : MODE) -> String {
        return ""

    private var animateLine             : GMSPolyline?              = nil
    private var googleMap               : GMSMapView?               = nil
    private var step                    : Int                       = -1
    private var animationSpeed          : SPEED                     = SPEED.NORMAL
    private var mode                    : String                    = STATUS.OK.rawValue
    private var mapZoom                 : Int                       = -1
    private var animateDistance         : Double                    = -1
