{description: Base StructureDefinition for Duration Type, package_name: hl7.fhir.core, derivation: specialization, name: Duration, type: Duration, package_version: 1.8.0, class: complex-type, kind: complex-type, url: 'http://hl7.org/fhir/StructureDefinition/Duration', base: 'http://hl7.org/fhir/StructureDefinition/Quantity', version: null}