{description: A code system included or excluded in the value set or an imported value set, package_name: hl7.fhir.r5.core, name: reference, type: uri, package_version: 5.0.0-ballot, class: unknown, kind: null, url: 'http://hl7.org/fhir/SearchParameter/ValueSet-reference', version: 5.0.0-ballot}