description: 'STU3: `ProcessRequest.nullify` (new:boolean)' package_name: hl7.fhir.uv.xver-r3.r4b derivation: constraint name: ExtensionProcessRequest_Nullify type: Extension elements: url: base: {max: '1', min: 1, path: Extension.url} pattern: {type: Uri, value: 'http://hl7.org/fhir/3.0/StructureDefinition/extension-ProcessRequest.nullify'} index: 0 value: base: {max: '1', min: 0, path: 'Extension.value[x]'} short: Remove history choices: [valueBoolean] index: 2 valueBoolean: short: Remove history type: boolean base: {max: '1', min: 0, path: 'Extension.value[x]'} choiceOf: value index: 3 package_version: 0.1.0 class: extension kind: complex-type url: http://hl7.org/fhir/3.0/StructureDefinition/extension-ProcessRequest.nullify base: http://hl7.org/fhir/StructureDefinition/Extension|4.3.0 version: 0.1.0 required: [url]