json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Documentation",
      "description": "Add documentation",
      "type": "object",
      "properties": {
          "CADI_ID": {
              "title": "CADI ID",
              "type": "string"
          },
          "url": {
              "title": "URL",
              "type": "string"
          },
          "keyword": {
              "title": "Keyword",
              "type": "string"
          },
          "comment": {
              "title": "Comment",
              "type": "string"
          }
      }
  }