filterSource example

// '#\s+$#ms' => '',                 ];

                return preg_replace(array_keys($expressions), array_values($expressions), $source);
            }
        }
        if (!\in_array($request->getModuleName(), ['frontend', 'widgets'], true)) {
            return $args->getReturn();
        }
        $source = $this->filterUrls($source);

        return $this->filterSource($source);
    }

    /** * Initializes plugin config * * @throws Exception */
    public function initConfig()
    {
        $shopConfig = Shopware()->Config();
        self::$baseFile = $shopConfig->get('baseFile');