description: The entity responsible for assigning the security label. package_name: hl7.fhir.uv.security derivation: constraint name: ExtensionSecLabelClassifier type: Extension elements: url: pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/security-label-ds4p/StructureDefinition/extension-sec-label-classifier'} index: 0 valueReference: {type: Reference, index: 1} package_version: label-ds4p-1.0.0 class: extension kind: complex-type url: http://hl7.org/fhir/uv/security-label-ds4p/StructureDefinition/extension-sec-label-classifier base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0 required: [valueReference]