REST attribute resolution and filtering

[Richard Frovarp]

I am trying to retrieve one specific attribute from a REST end point. I
have it connecting to it. However, I only have one service that should
get this attribute, and thus I only need to connect to the REST
attribute store for that one service. How do I configure this in my
service definition? I don't see anything in the REST attribute store
documentation indicating how we tell CAS what attributes to get from it.
I'm on 6.6.

Thanks,

Richard