json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "additionalProperties": false,
      "properties": {
          "name": {
              "type": "string",
              "additionalProperties": false
          },
          "description": {
              "type": "string",
              "additionalProperties": false
          },
          "icon": {
              "type": "string",
              "additionalProperties": false
          }
      },
      "required": [
          "name"
      ]
  }