+       /**
+        * Returns a list of filters to add to the existing list.
+        *
+        * @return \Twig\TwigFilter[]
+        */
+       public function getTokenParsers(): array {
+               return [
+                       new TokenParser($this->locator, $this->package, $this->config, 'stylesheet', $this->output['css'], $this->filters['css']),
+                       new TokenParser($this->locator, $this->package, $this->config, 'javascript', $this->output['js'], $this->filters['js']),
+                       new TokenParser($this->locator, $this->package, $this->config, 'image', $this->output['img'], $this->filters['img'])
+               ];
+       }
+
+       /**
+        * Returns a list of filters to add to the existing list.
+        *
+        * @return \Twig\TwigFilter[]
+        */
+       public function getFilters(): array {