{description: The kind of operation to perform as a part of a property based filter., package_name: hl7.fhir.r6.core, name: FilterOperator, type: null, package_version: 6.0.0-ballot3, class: unknown, kind: null, url: 'http://hl7.org/fhir/ValueSet/filter-operator', version: 6.0.0-ballot3}