Coordinate system information
Total number of entities in the file
Number of geometry-bearing entities
OptionalgeoreferencingGeoreferencing (IfcMapConversion + IfcProjectedCRS). Absent when the
model carries no map-conversion data.
Optionallength_Length unit scale to convert model length values to metres (e.g. 0.001
for millimetres). Absent on older servers — treat as 1.
IFC schema version (e.g., "IFC2X3", "IFC4", "IFC4X3")
Model metadata extracted from the IFC file.