lib: make some classes abstract

[nit.git] / lib / mnit / image_set.nit

diff --git a/lib/mnit/image_set.nit b/lib/mnit/image_set.nit
index 8561b8f..f0a955e 100644 (file)
--- a/lib/mnit/image_set.nit
+++ b/lib/mnit/image_set.nit
@@ -21,7 +21,7 @@ module image_set
 import assets
 
 # A set of images, look for sub-classes in projects using svg_to_png_and_nit
-class ImageSet
+abstract class ImageSet
 
        # Load images to fill this image set
        fun load_all(app: App) is abstract