description: Marks that the expansion is incomplete, because the full value set is too large to represent, and the client asked for an incomplete fragment. package_name: rs/hl7.fhir.r5.core derivation: constraint name: toocostly type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/valueset-toocostly'} type: uri index: 1 value: choices: [valueBoolean] index: 3 valueBoolean: {type: boolean, choiceOf: value, index: 4} package_version: 4.4.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/valueset-toocostly base: http://hl7.org/fhir/StructureDefinition/Extension version: 4.4.0 required: [value, valueBoolean]