canonical

primitive type

Base StructureDefinition for canonical type: A URI that is a reference to a canonical URL on a FHIR resource

Path	Card.	Type	Description & Constraints
canonical	0..*	—	Primitive Type canonical
.id	0..1	String	xml:id (or equivalent in JSON)
.extension	0..*	Extension	Additional content defined by implementations
.value	0..1	String	Primitive value for canonical