IfcVirtualElementType or IfcAnnotationType should exist

[Moult]

Currently IfcVirtualElement and IfcAnnotation have no corresponding type. (e.g. so you can't have a type of dimension annotation)

The only workaround right now is to use IfcTypeProduct which has this scary warning:

The entity IfcTypeProduct shall not be instantiated from IFC4 onwards. It will be changed into an ABSTRACT supertype in future releases of IFC.

Proposal to add IfcVirtualElementType and IfcAnnotationType.

[TLiebich]

agree - it should be assigned to the IFC4.4 update