The error was:
```
Traceback (most recent call last):
File "\IfcOpenShell\src\ifcopenshell-python\ifcopenshell\util\generate_pset_templates.py", line 416, in <module>
templates_generator.parse_ifc4x3_data()
File "\IfcOpenShell\src\ifcopenshell-python\ifcopenshell\util\generate_pset_templates.py", line 94, in parse_ifc4x3_data
self.parse_psets_data("IFC4X3", pset_data_glob, "IFC4X3 Property Set Templates", str(IFC4x3_OUTPUT_PATH))
File "\IfcOpenShell\src\ifcopenshell-python\ifcopenshell\util\generate_pset_templates.py", line 129, in parse_psets_data
schema = ifcopenshell.ifcopenshell_wrapper.schema_by_name(schema_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "\ifcopenshell\ifcopenshell_wrapper.py", line 9037, in schema_by_name
return _ifcopenshell_wrapper.schema_by_name(arg1)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: No schema named IFC4X3
```
There are a few differences to the previous implementation:
1. It is no longer recalculated on wall regeneration. The new wall
regeneration is strict to the spec on the rules of rel connects path,
and so this being a "userdefined" connection we only calculate it
explicitly when the user invokes the operator.
2. It uses meshes instead of clipping planes, so you can clip to
strange shapes or gable roofs or whatever. Nice.
for occurrence classes without special type.
E.g. previously:
you select IfcSlab and change it to IfcRoof - since there is not IfcRoofType in IFC2X3 it would figure the matching product type is IfcBeamType and change this slab's type element to IfcBeamType. IfcBuildingElementProxyType seems more generic and fitting.
E.g. you select IfcSlab and change it to IfcRoof - since there is not IfcRoofType in IFC2X3 it would figure the matching product type is IfcBeamType (which is confusing too but that's another subject) and change this slab's type object to IfcBeamType which consequently change IfcSlab to IfcBeam instead of IfcRoof that was selected originally.
Noticed investigating #5918
Andrej730