description: Smart Guidelines Actor Reference extension package_name: smart.who.int.trust-phw derivation: constraint name: SGActorExt type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://smart.who.int/trust-phw/StructureDefinition/SGActorExt'} index: 1 value: mustSupport: true choices: [valueReference] index: 3 valueReference: type: Reference mustSupport: true choiceOf: value refers: ['http://smart.who.int/base/StructureDefinition/SGActor'] index: 4 package_version: 0.1.0 extensions: {} class: extension kind: complex-type url: http://smart.who.int/trust-phw/StructureDefinition/SGActorExt base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.1.0 required: [valueReference, value]