description: Extension added to a Task to refer to the ActivityDefinition which is instantiated by this Task package_name: koppeltaalv2.00 derivation: constraint name: KT2_Instantiates type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://vzvz.nl/fhir/StructureDefinition/instantiates'} index: 1 value: short: Reference to a KT2ActivityDefinition choices: [valueReference] index: 3 valueReference: type: Reference short: Reference to a KT2ActivityDefinition choiceOf: value refers: ['http://koppeltaal.nl/fhir/StructureDefinition/KT2ActivityDefinition'] index: 4 package_version: 0.15.0-beta.8 extensions: {} class: extension kind: complex-type url: http://vzvz.nl/fhir/StructureDefinition/instantiates base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [valueReference, value]