description: Smart Guidelines (required) string extension for use in a complex extension
package_name: smart.who.int.base
derivation: constraint
name: SGString
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://smart.who.int/base/StructureDefinition/SGString'}
    index: 1
  value:
    mustSupport: true
    choices: [valueString]
    index: 3
  valueString: {type: string, mustSupport: true, choiceOf: value, index: 4}
package_version: 1.0.0
extensions: {}
class: extension
kind: complex-type
url: http://smart.who.int/base/StructureDefinition/SGString
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 1.0.0
required: [valueString, value]