We actually pass multiple values now.

Before we only passed the resource set, and it would fail with
resourceSet alone. But we now pass more than just the resource set, so
we need to wrap it anyway, we can no longer just pass on the resource
set itself.
Processing resource set in separate pipeline.

This cleans up the code as we don't have to pass the full body around to
the entire pipeline, we just have to pass body related stuff at the last step.
Adding preliminary static session paths.

Still gotta test if it actually works!