Multiple shading controls for a single subsurface

Issue overview

We implemented https://github.com/NREL/OpenStudio/pull/4066 to allow a single subsurface to reference multiple shading control objects. While the API now permits this, it appears that the simulation is ignoring any additional shading controls beyond the first one.

Current Behavior

The "Window Control" table in eplustbl.htm does not contain any rows for "Shading Control 2".

Expected Behavior

The "Shading Control 2" object has subsurfaces applied to it, so we'd expect it to be listed in the "Window Control" table.

Steps to Reproduce

Run shadingcontrol_singlezone.rb from OS-resources: https://github.com/NREL/OpenStudio-resources/blob/develop/model/simulationtests/shadingcontrol_singlezone.rb. Look at eplustbl.htm.

Possible Solution

Maybe some specific property(ies) need to be set on "Shading Control 2", otherwise it gets ignored?

Details

Additional resources:

• New/modified OS-resources tests: https://github.com/NREL/OpenStudio-resources/pull/147
• Shading control follow-up PR: https://github.com/NREL/OpenStudio/pull/4103
• Relevant comment: https://github.com/NREL/OpenStudio/pull/4066#issuecomment-868760359

Environment

Some additional details about your environment for this issue (if relevant):

• Platform (Operating system, version):
• Version of OpenStudio (if using an intermediate build, include SHA):

Context

Run shadingcontrol_singlezone.rb from OS-resources and inspect eplustbl.htm, focusing on the Window Control table and the missing Shading Control 2 rows. Review the related OS-resources test changes and the shading control follow-up PR 4103; done means the second shading control's subsurfaces appear in the table.