{description: The authorization (purposeOfUse) of the event, package_name: hl7.fhir.r5.search, name: purpose, type: token, package_version: 5.0.0-draft-final, class: unknown, kind: null, url: 'http://hl7.org/fhir/SearchParameter/AuditEvent-purpose', version: 5.0.0-draft-final}