ConceptRef
ConceptRef is the semantic mechanism by which RSM objects refer to governed or external concepts without hard-coding the complete taxonomy into programming-language enums.
Specification-sourced: quoted from the governing specification, pending the applicable specification-owner approvals. The specification controls.
In RSMOne's words
A ConceptRef identifies the concept; it does not copy or freeze the concept's definition into every object that refers to it. Implementations resolve it through a Taxonomy Resolver to obtain definition, status, version and provenance.