{description: 'url type: A URI that is a literal reference', package_name: hl7.fhir.r5.core, derivation: specialization, name: url, type: url, package_version: 5.0.0-snapshot3, class: primitive-type, kind: primitive-type, url: 'http://hl7.org/fhir/StructureDefinition/url', base: 'http://hl7.org/fhir/StructureDefinition/uri', version: 5.0.0-snapshot3}