description: 'Extension used by a server to indicate to a client when the members in a dynamic group were last updated. For example, the following extension would indicate that the group members were last updated January 1st 2024:\n```\n\"Extension\" : [{\n \"url\" : \"http://hl7.org/fhir/uv/bulkdata/StructureDefinition/members-refreshed\",\n \"valueDateTime\" : \"2024-01-01T13:28:17-05:00\"\n}]\n```' package_name: hl7.fhir.uv.bulkdata derivation: constraint name: MembersRefreshed type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/uv/bulkdata/StructureDefinition/members-refreshed'} type: uri index: 1 value: choices: [valueDateTime] index: 3 valueDateTime: {type: dateTime, choiceOf: value, index: 4} package_version: 3.0.0-ballot extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/uv/bulkdata/StructureDefinition/members-refreshed base: http://hl7.org/fhir/StructureDefinition/Extension version: 3.0.0-ballot