description: null package_name: uk.nhsdigital.r4 derivation: constraint name: Extension-Spine-CommunicationPayload type: Extension elements: extension: index: 0 slicing: rules: open discriminator: - {path: url, type: value} min: null slices: title: match: {url: title} schema: _required: true index: 1 elements: url: pattern: {type: Uri, value: title} index: 2 value: choices: [valueString] index: 4 valueString: {type: string, choiceOf: value, index: 5} url: pattern: {type: Uri, value: 'https://fhir.nhs.uk/StructureDefinition/Extension-Spine-CommunicationPayload'} index: 6 value: choices: [] index: 8 package_version: 2.1.2-dev extensions: title: url: title _required: true index: 1 elements: url: pattern: {type: Uri, value: title} index: 2 value: choices: [valueString] index: 4 valueString: {type: string, choiceOf: value, index: 5} class: extension kind: complex-type url: https://fhir.nhs.uk/StructureDefinition/Extension-Spine-CommunicationPayload base: http://hl7.org/fhir/StructureDefinition/Extension version: null