OptionalifcOptionalmodelsThe models the rule set runs on. A numeric property or quantity check
compared in model units is exported in SI, converted with the unit
these models store that value in (#5225). Without models, or when they
disagree, such a rule is refused with the reason; a rule already
compared in SI (valueUnit: 'si') exports without them.
ifcVersionof every specification. Default:['IFC4'].