description: The product administered during a vaccination event. package_name: acme.usecase.r4 derivation: constraint name: ExtensionAdministeredProduct type: Extension elements: url: pattern: {type: Uri, value: 'https://fake-acme.org/fhir/StructureDefinition/Extension-AdministeredProduct'} index: 0 value: choices: [valueReference] index: 2 valueReference: type: Reference choiceOf: value refers: ['http://hl7.org/fhir/StructureDefinition/Medication'] index: 3 package_version: 1.1.2-preview1 class: extension kind: complex-type url: https://fake-acme.org/fhir/StructureDefinition/Extension-AdministeredProduct base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [valueReference, value]