description: null package_name: fhir.nhs.uk.wayfinder derivation: constraint name: ExtensionWayfinderClient-id type: Extension elements: url: pattern: {type: uri, value: 'https://fhir.nhs.uk/StructureDefinition/Extension-Client-id'} type: uri index: 0 value: choices: [valueCode] index: 2 valueCode: {type: code, choiceOf: value, index: 3} package_version: 1.0.3 class: extension kind: complex-type url: https://fhir.nhs.uk/StructureDefinition/Extension-Client-id base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [value, valueCode]