http://hl7.org/fhir/StructureDefinition/url|5.0.0

{description: 'url type: A URI that is a literal reference', derivation: specialization, name: url, type: url, class: primitive-type, kind: primitive-type, url: 'http://hl7.org/fhir/StructureDefinition/url', base: 'http://hl7.org/fhir/StructureDefinition/uri', version: 5.0.0}