Yii2 documentor. Include source code

Hello. Following the guide: http://www.yiiframework.com/doc-2.0/ext-apidoc-index.html I want to know if there is any way to include the source code in the doc generator. I know that yii2-apidoc package generates the documentation for the classes, methods, namespaces references, attributes, etc, but I want to know whether is any way to include the source code for each method.

Thanks.