description: Marks an element as a choice of types where the type is implied by the JSON type. The only valid types at string, integer, decimal, and boolean package_name: hl7.fhir.uv.tools.r4 derivation: constraint name: JsonPrimitiveChoiceExt type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/tools/StructureDefinition/json-primitive-choice'} type: uri index: 1 value: choices: [valueBoolean] index: 3 valueBoolean: {type: boolean, choiceOf: value, index: 4} package_version: 0.6.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/tools/StructureDefinition/json-primitive-choice base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.6.0 required: [value, valueBoolean]