json_schema: {
      "title": "description",
      "type": "object",
      "$schema": "http://json-schema.org/draft-04/schema",
      "description": "Description object with text.",
      "properties": {
          "text": {
              "type": "string",
              "description": "Text to display as slide description."
          }
      },
      "required": [
          "text"
      ],
      "additionalProperties": false,
      "esriDocumentation": {
          "examples": [
              {
                  "title": "description",
                  "code": {
                      "description": {
                          "text": "Slide description"
                      }
                  }
              }
          ]
      }
  }