{description: 'Whether a reference needs to be version specific or version independent, or whether either can be used.', package_name: hl7.fhir.r4b.core, name: ReferenceVersionRules, type: null, package_version: 4.1.0, class: unknown, kind: null, url: 'http://hl7.org/fhir/reference-version-rules', version: 4.1.0}