description: null package_name: de.gematik.elektronische-versicherungsbescheinigung derivation: constraint name: servicePeriod type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://gematik.de/fhir/eeb/StructureDefinition/servicePeriod'} index: 1 value: choices: [valuePeriod] index: 3 valuePeriod: {type: Period, choiceOf: value, index: 4} package_version: 1.2.0-rc extensions: {} class: extension kind: complex-type url: https://gematik.de/fhir/eeb/StructureDefinition/servicePeriod base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.2.0