Live express id in resolvedModelId when validated.
IFC GlobalId.
OptionalifcDurable key when validated; null otherwise.
Live viewer model id when the native source names one; null when it does not (BCF components, linked records).
Durable model name (file name) when known; historical evidence carries only this.
OptionalnameOptionalnativeThe native source itself could not identify the element; it is never merged by GlobalId alone.
An element a finding refers to, as the native source names it.