description: null package_name: ca.on.health.idms derivation: constraint name: ExtensionGroupColumnCount type: Extension elements: url: pattern: {type: uri, value: 'https://health.gov.on.ca/idms/fhir/StructureDefinition/Extension-Group-Column-Count'} type: uri index: 0 value: choices: [valueInteger] index: 2 valueInteger: {type: integer, choiceOf: value, index: 3} package_version: 1.0.9 class: extension kind: complex-type url: https://health.gov.on.ca/idms/fhir/StructureDefinition/Extension-Group-Column-Count base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0