description: the period for which this element is valid. package_name: ca.infoway.io.core derivation: constraint name: ElementValidityPeriod type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://fhir.infoway-inforoute.ca/cacore/StructureDefinition/element-validityPeriod-ca-core'} index: 1 value: choices: [] index: 3 slicing: rules: open ordered: false discriminator: - {path: $this, type: type} min: null slices: valuePeriod: match: {} schema: choices: [valuePeriod] index: 5 min: 0 max: 1 valuePeriod: type: Period choiceOf: value index: 6 slicing: slices: valuePeriod: match: {} schema: {type: Period, choiceOf: value, index: 6} min: 0 max: 1 value[x]: elements: start: {index: 7} end: {index: 8} package_version: 1.0.0-dft-preballot extensions: {} class: extension kind: complex-type url: http://fhir.infoway-inforoute.ca/cacore/StructureDefinition/element-validityPeriod-ca-core base: http://hl7.org/fhir/StructureDefinition/Extension version: null