These Drawable.Callback methods proxy the calls so that this is the drawable that is
actually invalidated, not a child one which will not pass the view's validateDrawable check.
If you use image assets, you must explicitly specify the folder in assets/ in which they are
located because bodymovin uses the name filenames across all compositions (img_#).
If you use image assets, you must explicitly specify the folder in assets/ in which they are
located because bodymovin uses the name filenames across all compositions (img_#).