description: changeType can be new (member added), dropped (member removed), changed (member information has changed), nochange (no change in member information since group was created).
package_name: rs/hl7.fhir.us.davinci
derivation: constraint
name: ChangeType
type: Extension
elements:
  url:
    type: uri
    pattern: {type: uri, value: 'http://hl7.org/fhir/us/davinci-atr/StructureDefinition/ext-changeType'}
    index: 0
  value:
    choices: [valueCode]
    index: 2
  valueCode: {type: code, choiceOf: value, index: 3}
package_version: atr-2.1.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/davinci-atr/StructureDefinition/ext-changeType
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 2.1.0