my question:

i have an Ifc file structured like

IfcProject -> IfcSite -> IfcBuilding -> IfcBuilding Storey -> IfcSpace

trying to convert to gml i fail to convert IfcSite to GmlLandUse. the export structure is:

CityModel -> LandUse -> Building -> BuildingPart -> Room

when i remove the writer for LandUse, the structure exports as expected like:

CityModel -> Building -> BuildingPart ->Room

ids and parent ids are inherited from CityModel to LandUse to Building....

suppose ids and parentids are correct

LandUse has no geometry

any help appreciated