{description: How resource references can be aggregated., package_name: hl7.fhir.uv.xver, name: AggregationMode, type: null, package_version: r4b.r5-0.0.1-snapshot-2, class: unknown, kind: null, url: 'http://hl7.org/fhir/resource-aggregation-mode', version: 4.3.0}