http://hl7.org/fhir/StructureDefinition/artifact-uriReference|5.2.0

Create a reference, following canonical reference semantics, to an artifact that uses the artifact-url and artifact-version extensions to provide a canonical identifier.
element_idtypes
Extension
Extension.extension
Extension.url
Extension.value[x]
Extension
Extension.id
Extension.extension
Extension.url
Extension.value[x]