"references": {
 "serviceDocument": [{
  "documentType": "CODE_EXAMPLE",
  "title": "Example of messages",
  "version": "1.0",
  "description": "A set of message examples",
  "reference": {
   "url": "public:/2019-09/MessageExamples.txt"
  }
 },
 {
  "documentType": "CODE_EXAMPLE",
  "title": "Service Implementation Manual",
  "version": "24.0",
  "description": "The manual to be used by service consumers when implementing the service. It includes code examples.",
  "reference": {
   "url": "public:/2019-09/ServiceImplementationManual.html"
  }
 }]
}