     }
     
     open func startDownloading (_ lat: Double,
-                                  lon: Double,
-                                  zoom: CustomMapZoom,
-                                  radius: CustomMapRadius,
-                                  progressfillColor: UIColor = UIColor.black,
-                                  progressGuideColor: UIColor = UIColor.lightGray,
-                                  fillLineWidth: Double = 12.0,
-                                  textLabelFont: UIFont = UIFont.systemFont(ofSize: 28.0),
-                                  textLabelColor: UIColor = UIColor.black,
-                                  stopButtonColor: UIColor = UIColor.blue,
-                                  stopButtonLabelFont: UIFont = UIFont.systemFont(ofSize: 17.0),
-                                  stopButtontitle: String = NSLocalizedString("Stop", comment: "")) {
+                                lon: Double,
+                                zoom: CustomMapZoom,
+                                radius: CustomMapRadius,
+                                progressfillColor: UIColor = UIColor.black,
+                                progressGuideColor: UIColor = UIColor.lightGray,
+                                fillLineWidth: Double = 12.0,
+                                textLabelFont: UIFont = UIFont.systemFont(ofSize: 28.0),
+                                textLabelColor: UIColor = UIColor.black,
+                                stopButtonColor: UIColor = UIColor.blue,
+                                stopButtonLabelFont: UIFont = UIFont.systemFont(ofSize: 17.0),
+                                stopButtontitle: String = NSLocalizedString("Stop", comment: "")) {
         
         
         stopDownloading()

                            
                            self.stopDownloading()
                            
                            let alertController = UIAlertController (title: "Thank you!", message: "Maps will be switched automatically once you will be offline", preferredStyle: .alert)
                            
                            let action = UIAlertAction(title:"Ok", style: .default) { (_) -> Void in

                self.saveImage(image, fileName: fileName, type: "png", directoryPath: pathForWriting)
                downloadedTilesConst += 1
                
                print("downloadedTiles: \(downloadedTilesConst)")
                
                guard error == nil && temporaryURL != nil else {
                    print(error)
