description: Create a reference, following canonical reference semantics, to an artifact that\nuses non-canonical extensions artifact-url and artifact-version as business\nidentifiers. package_name: hl7.fhir.uv.crmi derivation: constraint name: ArtifactUriReference type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/artifact-uriReference'} index: 1 value: choices: [valueUri] index: 3 valueUri: {type: uri, choiceOf: value, index: 4} package_version: 1.0.0-snapshot extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/artifact-uriReference base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0-snapshot