I am trying to run the measure of "Roof thermal properties multiplier" that I found in the BCL library, on a DOE prototypical building. It is throwing an error that says "undefined method 'getSolarAbsorptance'. Solar absorptance is one of the arguments in the measure. I am surprised because this is a measure from the BCL, and it should be working fine. Could I get some help understanding the 'undefined method' error.