public function initializeFusionRuntime()
    {
        if ($this->fusionRuntime === null) {
            $this->loadFusion();
            $this->fusionRuntime = new Runtime($this->parsedFusion, $this->controllerContext);
        }
        if (isset($this->options['debugMode'])) {
            $this->fusionRuntime->setDebugMode($this->options['debugMode']);
        }
        if (isset($this->options['enableContentCache'])) {
            $this->fusionRuntime->setEnableContentCache($this->options['enableContentCache']);
        }
    }