description: The URL of the questionnaire to be used to collect the information. If this information is not supplied as part of the activity definition, it is expected to be determined dynamically as part of realizing the activity. package_name: hl7.fhir.uv.cpg.r4 derivation: constraint name: CPGCollectWith type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-collectWith'} index: 1 value: choices: [valueCanonical] index: 3 valueCanonical: {type: canonical, choiceOf: value, index: 4} package_version: 2.0.0-ballot extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-collectWith base: http://hl7.org/fhir/StructureDefinition/Extension version: 2.0.0-ballot