I notice one can create a workflow to auto-magically generate documents via a Workflow which invokes the Nintex webservices. This process requires one or more Drawloop_Next# fields because each step is mutually disconnected, and so these fields are used to pass the various parameters such as attachments or delivery method.
Solved! Go to Solution.
It definitely can be called from Apex. We started with the Drawloop Next method as it did not require code and deployment. This should point you in the right direction.
Many thanks to Vincent Cabral for that exceptionally fruitful source. Clearly some knowledge will only come from experience, but that answer sets one off in the perfect direction.
I'm trying to go down the Drawloop_Next path. Looking for all the items that can be included in these fields. Unfortunately, the reference included above results in "Page not found". Is this documented elsewhere?