{description: During what period was the Appointment requested to take place, package_name: hl7.fhir.r6.core, name: requested-period, type: date, package_version: 6.0.0-ballot2, class: unknown, kind: null, url: 'http://hl7.org/fhir/SearchParameter/Appointment-requested-period', version: 6.0.0-ballot2}