I have a task model that is derived from "bpm:activitiOutcomeTask" type.
it has a bpm_package association, which stores documents attached to workflow after start task is finished.
now I want to add another "my_package" property/association, which will separately hold documents gathered during workflow lifecycle. I want this "two" packages to be separate sets of documents.
could not figure out how to do this, what kind of task model should I write