{ "description": "Optional Extensions Element", "_filename": "SearchParameter-codesystem-extensions-CodeSystem-end.json", "package_name": "hl7.fhir.r4.examples", "date": null, "publisher": null, "name": "end", "xpath": "f:CodeSystem/f:extension[@url='http://hl7.org/fhir/StructureDefinition/codesystem-expirationDate'] | /f:#expirationDate", "xpathUsage": "normal", "type": "date", "experimental": "true", "resourceType": "SearchParameter", "title": null, "package_version": "4.0.1", "status": "draft", "id": "bd80f14a-bad6-443d-b8e7-d5854a8a573c", "kind": null, "url": "http://hl7.org/fhir/SearchParameter/codesystem-extensions-CodeSystem-end", "code": "end", "version": "4.0.1" }