plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
   <extension
         point="com.worldline.clic.commands">
      <command
            description="Just an example of a command you could develop..."
            id="example:hello"
            implementation="com.acme.sample.commands.HelloCommand">
      </command>
   </extension>

</plugin>