public string CopyPhotoTo(string photoPath)
        {
            _imageService = DependencyService.Get<IImageService>();

            var imgData = new UIImage(photoPath).AsJPEG();
            var ID = _imageService.GetId();
            var ExtensionsFile = ".jpg";
            var jpgFilename = Path.Combine(GetPath(), ID + ExtensionsFile);
            NSError err = null;

            if (imgData.Save(jpgFilename, false, out err))
            {
                Console.WriteLine("saved as " + jpgFilename);
            }
            else
            {
                Console.WriteLine("NOT saved as " + jpgFilename + " because" + err.LocalizedDescription);
            }
            return ID + ExtensionsFile;
        }