{description: 'Base StructureDefinition for Duration Type: A length of time.', package_name: hl7.fhir.r5.core, derivation: specialization, name: Duration, type: Duration, package_version: 4.2.0, class: complex-type, kind: complex-type, url: 'http://hl7.org/fhir/StructureDefinition/Duration', base: 'http://hl7.org/fhir/StructureDefinition/Quantity', version: 4.2.0}