description: 'R5: `ActorDefinition.reference` (new:url)' package_name: hl7.fhir.uv.xver-r5.r4 derivation: constraint name: ExtensionActorDefinition_Reference type: Extension elements: url: base: {max: '1', min: 1, path: Extension.url} pattern: {type: Uri, value: 'http://hl7.org/fhir/5.0/StructureDefinition/extension-ActorDefinition.reference'} index: 0 value: base: {max: '1', min: 0, path: 'Extension.value[x]'} short: Reference to more information about the actor choices: [valueUrl] index: 2 valueUrl: short: Reference to more information about the actor type: url base: {max: '1', min: 0, path: 'Extension.value[x]'} choiceOf: value index: 3 package_version: 0.1.0 class: extension kind: complex-type url: http://hl7.org/fhir/5.0/StructureDefinition/extension-ActorDefinition.reference base: http://hl7.org/fhir/StructureDefinition/Extension|4.0.1 version: 0.1.0 required: [url]