asset/api.js
function removeCachedSubAssets (id,req) {
		Asset.remove ({parentId:id},function (err) {
			if (err) { return next(err); }
			if (req) { req.next (); }
		});
	}
function removeCachedSubAssets (id,req) {
		Asset.remove ({parentId:id},function (err) {
			if (err) { return next(err); }
			if (req) { req.next (); }
		});
	}
/*
Removes all cached subassets which have the given id as its parentID