{description: The authorization (purposeOfUse) of the event, package_name: hl7.fhir.r6.core, name: purpose, type: token, package_version: 6.0.0-ballot1, class: unknown, kind: null, url: 'http://hl7.org/fhir/SearchParameter/AuditEvent-purpose', version: 6.0.0-ballot1}