28     private $asset;  variable in Assetic\\Asset\\AssetReference
40         if ($this->asset) {
41             $this->asset = clone $this->asset;
136         $asset = $this->resolve();
138         return call_user_func_array(array($asset, $method), $arguments);
143         $asset = $this->resolve();
146             $asset->ensureFilter($filter);
152         if ($this->asset) {
153             return $this->asset;
156         $asset = $this->am->get($this->name);
159             $asset = $this->asset = clone $asset;
162         return $asset;