description: It contains enriched media representation of the alert message, such as a voice recording. This may be used, for example for compliance with jurisdictional accessibility requirements, literacy issues, or translations of the unstructured text content in other languages. package_name: hl7.fhir.core derivation: constraint name: Attached media type: Extension elements: extension: index: 0 slicing: slices: extension: match: {} schema: {index: 0} max: 0 url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/communication-media'} index: 1 value: choices: [valueAttachment] index: 3 valueAttachment: {type: Attachment, choiceOf: value, index: 4} package_version: 1.8.0 extensions: extension: {url: null, max: 0, index: 0} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/communication-media base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [valueAttachment, value]