overlay
actual fun BitmapUtil.overlay(source: Bitmap, overlay: Bitmap, horizontalAlignment: BitmapUtil.HorizontalAlignment, verticalAlignment: BitmapUtil.VerticalAlignment): Bitmap
expect fun BitmapUtil.overlay(source: Bitmap, overlay: Bitmap, horizontalAlignment: BitmapUtil.HorizontalAlignment = BitmapUtil.HorizontalAlignment.Center, verticalAlignment: BitmapUtil.VerticalAlignment = BitmapUtil.VerticalAlignment.Center): Bitmap
actual fun BitmapUtil.overlay(source: Bitmap, overlay: Bitmap, horizontalAlignment: BitmapUtil.HorizontalAlignment, verticalAlignment: BitmapUtil.VerticalAlignment): Bitmap