{description: 'url type: A URI that is a literal reference', package_name: hl7.fhir.r6.core, derivation: specialization, name: url, type: url, package_version: 6.0.0-ballot3, class: primitive-type, kind: primitive-type, url: 'http://hl7.org/fhir/StructureDefinition/url', base: 'http://hl7.org/fhir/StructureDefinition/uri', version: 6.0.0-ballot3}