buildingSMART / buildingSMART/IFC4.x-development

IfcTypeObject and NOTDEFINED web specification statement

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allocated allocated-core ifc-update-out
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Python
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Description

I need some clarification of the following statement or, at least, some examples:

> If the object is typed by an [IfcTypeObject](https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcTypeObject.htm), then the PredefinedType at the [IfcObject](https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcObject.htm) occurrence shall only be used if the PredefinedType at [IfcTypeObject](https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcTypeObject.htm) is set to NOTDEFINED.

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