onAssetChanged method
A file changed on disk: the pictures that show it are drawn again, and open workspaces read it again (a parent, a map, a layer).
Implementation
@override
void onAssetChanged(String path) {
_pictures?.forget(path);
_pictures2D?.forget(path);
maps.forget(path);
// A scene or prefab: what is drawn with a 2-D material, read again.
if (path.endsWith('.json')) Material2DUsers.forget(_root, path);
_changes.add(path);
}