ActivityWorklistRouterDefinition Retrieve

Hi,

I need to get elements from ActivityWorklistRouterDefinition but this BO doesn't have a query option, only retrieve option. Do you know, how can get elements from ActivityWorklistRouterDefinition? or some route to does retrieve option with a specific ID.

I currently have the elements of ActivityWorklist by endDate but I need to know the Activity Plan assigned to Routing Rule, and didn't find the element to match between ActivityWorklist and ActivityWorklistRouterDefinition, however, I find between ActivityWorklistRouterDefinition and ActivityWorklist with the problem that ActivityWorklistRouterDefinition doesn't have query option, only retrieve by ID or UUID.

Thanks so much for your help.

Regards.