Hi, I am trying to get the IfcRelSpaceBoundary and IfcRelSpaceBoundary2ndLevel information for analysis. I have the sample IFC file with three rooms. As shown in the images below, I used ifcopenshell to inspect but it seems that such information is missing. However, I found that there are indeed "2nd Level" information in the IFC texts. May I know how can I retrieve the 2nd level space boundary information from the IFC file?
