// change original assets to proxy assets
for( int i=0,n=proxy_assets->size(); i<n; ++i ) {
Asset *proxy_asset = assets->update((Asset *)proxy_assets->get(i));
// change original assets to proxy assets
for( int i=0,n=proxy_assets->size(); i<n; ++i ) {
Asset *proxy_asset = assets->update((Asset *)proxy_assets->get(i));