description: OpenEHR Property definition - what kind of thing a quantity is about. package_name: openehr.base derivation: constraint name: PropertyExtension type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://openehr.org/fhir/StructureDefinition/property'} index: 1 value: choices: [valueCoding] index: 3 valueCoding: {type: Coding, choiceOf: value, index: 4} package_version: 0.1.0-snapshot extensions: {} class: extension kind: complex-type url: http://openehr.org/fhir/StructureDefinition/property base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.1.0-snapshot required: [valueCoding, value]