http://hl7.org/fhir/StructureDefinition/boolean|4.0.1

{description: 'Base StructureDefinition for boolean Type: Value of \"true\" or \"false\"', derivation: specialization, name: boolean, type: boolean, class: primitive-type, kind: primitive-type, url: 'http://hl7.org/fhir/StructureDefinition/boolean', base: 'http://hl7.org/fhir/StructureDefinition/Element', version: 4.0.1}