message: Update LUIS Authoring Swagger
  Introducing new query parameter
diff: },
  {
  "$ref": "#/parameters/VersionIdInPath"
  + },
  + {
  + "in": "query",
  + "name": "mode",
  + "description": "An enum value specifying mode of training.",
  + "type": "string"
  }
  ],
  "responses": {
  