[rules-users] Where is MinaTaskClient ?

Hi, I am trying to connect to the mina server using the MinaTaskClient referred in the documentation; however the class does not seem to exist. I got the latest Drools 5.1 download. In any case how can I connect to the server in order to retrieve the tasks ? I see the TaskClient has the methods I need, but I am not sure how to create one, and everything I ve tried fails to retrieve a working TaskClient. I appreciate your help. Thanks