A commenter allows user to comment the code at the cursor or selected code automatically via corresponding actions.
17.1. Define a commenter
{% include /code_samples/simple_language_plugin/src/com/simpleplugin/SimpleCommenter.java %}
17.2. Register the commenter
<lang.commenter language="Simple" implementationClass="com.simpleplugin.SimpleCommenter"/>
17.3. Run the project
