Pset_Warranty PointOfContact data type changed is incompatible with COBie and needs updating

In IFC2X3, PointOfContact has a type of IfcPropertyReferenceValue pointing to an IfcOrganization. This reference is then used in the COBie 2.4 mappings from IFC to the COBie spreadsheet (such as in here https://github.com/opensourceBIM/COBie-plugins/blob/master/COBieShared/src/org/bimserver/cobie/shared/serialization/util/IfcTypeToCOBieTypeSerializer.java#L84 )

In IFC4 this was changed and it is unclear how IFC4 should deal with it. What should this label contain? An email? An organisation name? An organisation identifier? An actor reference? etc.

This is one of a number of problematic COBie integrations in IFC that I hope AOH-BEM can solve / supersede with better specs.