protected override void OnElementChanged(ElementChangedEventArgs <FAB.Forms.FloatingActionButton> e)
        {
            base.OnElementChanged(e);

            if (e.NewElement != null)
            {
                var fab = new MNFloatingActionButton();
                fab.Frame = new CoreGraphics.CGRect(0, 0, 24, 24);

                this.SetNativeControl(fab);

                this.UpdateStyle();

                this.Control.TouchCancel += this.Fab_TouchUpInside;
            }
        }
        private async static Task SetImageAsync(ImageSource source, nfloat widthRequest, nfloat heightRequest, MNFloatingActionButton targetButton)
        {
            var handler = GetHandler(source);

            using (UIImage image = await handler.LoadImageAsync(source))
            {
                UIGraphics.BeginImageContext(new CoreGraphics.CGSize(widthRequest, heightRequest));
                image.Draw(new CoreGraphics.CGRect(0, 0, widthRequest, heightRequest));
                using (var resultImage = UIGraphics.GetImageFromCurrentImageContext())
                {
                    UIGraphics.EndImageContext();
                    using (var resizableImage = resultImage.CreateResizableImage(new UIEdgeInsets(0f, 0f, widthRequest, heightRequest)))
                    {
                        targetButton.CenterImageView.Image = resizableImage.ImageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal);
                    }
                }
            }
        }