http://hl7.org/fhir/StructureDefinition/11179-permitted-value-valueset|4.0.1

Allows expressing the value set that must be stored internally by the system (as distinct from the base value set which defines values for exchange).

element_id	types
Extension
Extension.extension
Extension.url
Extension.value[x]	canonical
Extension
Extension.id	http://hl7.org/fhirpath/System.String
Extension.extension	Extension
Extension.url	http://hl7.org/fhirpath/System.String
Extension.value[x]	canonical