[midPoint] Outbound mapping conditional on role

[Kromhout, Ethan A.]

I'm trying to solve a mapping problem that I think is similar to a 
thread on the mailing list that Pavol replied to in 2017:

http://lists.evolveum.com/pipermail/midpoint/2017-June/003876.html

Pavol provided some documentation links, but I'm still struggling with 
what the xml for the schemaHandling section of my connector should look 
like. I'd like to set a role in a resource based on a role in midPoint, 
for example if you are assigned the role WordPress-Subscriber in 
midPoint how would I pass either the role name or a simple literal to my 
outbound mapping?

Thanks for any suggestions,

Ethan