Implement SurfaceCoefficient descriptor to simplify property generation
Implement SurfaceCoefficient descriptor to simplify property generation

amandalund/openmc,smharper/openmc,shikhar413/openmc,liangjg/openmc,mit-crpg/openmc,amandalund/openmc,smharper/openmc,mit-crpg/openmc,walshjon/openmc,paulromano/openmc,paulromano/openmc,amandalund/openmc,shikhar413/openmc,shikhar413/openmc,liangjg/openmc,paulromano/openmc,mit-crpg/openmc,liangjg/openmc,walshjon/openmc,smharper/openmc,shikhar413/openmc,smharper/openmc,amandalund/openmc,walshjon/openmc,liangjg/openmc,paulromano/openmc,walshjon/openmc,mit-crpg/openmc