json_schema: {
      "id": "http://schlothauer.de/schemas/shared/app_module.json",
      "$schema": "http://json-schema.org/draft-04/schema#",
      "description": "application specific module",
      "type": "object",
      "properties": {
          "name": {
              "description": "Name of the module",
              "type": "string",
              "pattern": "^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}$",
              "__unique": true,
              "__visKey": true
          },
          "description": {
              "description": "some more words to explain",
              "type": "string"
          },
          "guid": {
              "description": "global identifier",
              "type": "string",
              "format": "uuid"
          },
          "app_id": {
              "description": "Which application owns that module",
              "type": "string",
              "format": "uuid",
              "__ref": "./application.json"
          },
          "active": {
              "description": "is this entry still active",
              "type": "boolean"
          }
      },
      "required": [
          "name",
          "gid"
      ],
      "version": 1
  }