public function setSourceFiles($value)
    {
        foreach ($value as $key => $settings) {
            if ($settings === false) {
                $this->_sourceFiles[$key] = false;
                continue;
            }
            if (!isset($settings['class'])) {
                $settings['class'] = $this->sourceFileClass;
            }
            $settings['id'] = $key;
            $this->_sourceFiles[$key] = Yii::createObject($settings);
        }
    }