Qto_BuildingElementProxyQuantities

The Qto_Type for `NetSurfaceArea` and `NetVolume` in `Qto_BuildingElementProxyQuantities` are both `Q_COUNT`, but are `Q_AREA` and `Q_VOLUME` for other entities (like IfcBeam). Is this inconsistency an error, or documented as intended?

This issue is present in IFC4.0.2.1: [https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcsharedbldgelements/qset/qto_buildingelementproxyquantities.htm](url)
...and in the HTML documentation for IFC4.3: [https://github.com/bSI-InfraRoom/IFC-Documentation/blob/main/4_3_0_0/rc4/HTML/qto/Qto_BuildingElementProxyQuantities.xml](url)

Start by comparing Qto_BuildingElementProxyQuantities in the linked IFC4.0.2.1 schema with 4_3_0_0/rc4/HTML/qto/Qto_BuildingElementProxyQuantities.xml. Check the corresponding quantities for entities such as IfcBeam and determine whether Q_COUNT is intentional or inconsistent. Done means the issue has a documented determination and an agreed correction or explanation.

Written by the indexing model from the issue text.