json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "properties": {
          "status": {
              "type": "string",
              "enum": [
                  "initialized",
                  "failure"
              ],
              "default": "initialized",
              "description": "der Status der StartStoppApplikation"
          },
          "messages": {
              "type": "array",
              "items": {
                  "type": "string"
              }
          }
      },
      "required": [
          "status"
      ]
  }