description: Allows communication of a 'key' for a requirements actor, allowing that actor to be referenced on individual requirements (as introduced in FHIR R6) package_name: hl7.fhir.uv.tools derivation: constraint name: RequirementsActorKey type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/tools/StructureDefinition/requirements-actorkey'} index: 1 value: choices: [valueId] index: 3 valueId: {type: id, choiceOf: value, index: 4} package_version: 1.0.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/tools/StructureDefinition/requirements-actorkey base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0 required: [value, valueId]