Tasks and actions

Hi, 

Is it possible to call initiate an existing task (not a new but the one declared in “tasks.odmdpc”, nurses scheduling already has an example for initiating a “new task”) from a class which extends IloODMAction?

How in general actions and tasks can be connected with each other? in other words, clicking on a menu option would trigger a task. I was not able to find an example and some of the examples are for DOC 3.8 where actionhandler is used while its deprecated in DOC 3.9. 

Thanks,

Hadi