description: A package (id#ver) that has pages that this IG references, without depending on. The sole purpose of defining these IGs is to inform the publisher link checker that links to this IG are valid package_name: hl7.fhir.uv.tools.r5 derivation: constraint name: IGLinkDependency type: Extension elements: extension: {index: 0} url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/tools/StructureDefinition/ig-link-dependency'} index: 1 value: choices: [valueCode] index: 3 valueCode: {type: code, choiceOf: value, index: 4} package_version: 0.4.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/tools/StructureDefinition/ig-link-dependency base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.4.0 required: [valueCode, value]