Is there a working example of how custom action , action_execution Works (#344)

Posted by @TheConstructAi:

Hi,

Trying to make Action execution work , but having issues related to mak it work with the provided examples and guidelines :

Tutorial, but not giving a clear example of how to use it: User-defined Tasks - Programming Multiple Robots with ROS 2

Is there someone that has a working example of using this to perform a custom action outside using the docking tag or hacky dispenser/ingestor trick? So a plain clear example of how to use this that works?

It would help a lot to clarify how this sis supos to be used.