description: The logical URL of the ValueSet definition that was used to generate this expansion. package_name: rs/hl7.fhir.r2.core name: ValueSet definition used to generate this expansion (logical URL) type: null elements: extension: {name: extension, index: 0} url: type: uri pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/valueset-expansionSource'} index: 1 value: choices: [valueUri] index: 3 valueUri: {type: uri, choiceOf: value, index: 4} package_version: 1.0.2 extensions: {} class: datatype kind: datatype url: http://hl7.org/fhir/StructureDefinition/valueset-expansionSource version: null required: [value, valueUri]