json_schema: {
      "properties": {
          "tasks": {
              "items": {
                  "properties": {
                      "details": {
                          "description": "Enter the task details",
                          "title": "Task details",
                          "type": "string"
                      },
                      "done": {
                          "default": false,
                          "title": "Done?",
                          "type": "boolean"
                      },
                      "title": {
                          "description": "A sample title",
                          "title": "Title",
                          "type": "string"
                      }
                  },
                  "required": [
                      "title"
                  ],
                  "type": "object"
              },
              "title": "Tasks",
              "type": "array"
          },
          "title": {
              "title": "Task list title",
              "type": "string"
          }
      },
      "required": [
          "title"
      ],
      "title": "A list of tasks",
      "type": "object"
  }