description: Marks that this resource is a matchetype - an instance of data with extensions and primary values that specify a set of rules. Other resources can be tested against this. package_name: rs/hl7.fhir.uv.tools.r5 derivation: constraint name: MatchetypeFlag type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/tools/StructureDefinition/matchetype'} type: uri index: 1 value: choices: [valueCode] index: 3 valueCode: {type: code, choiceOf: value, index: 4} package_version: 0.5.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/tools/StructureDefinition/matchetype base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.5.0 required: [value, valueCode]