json_schema: {
      "$ref": "#/definitions/oic.r.light",
      "definitions": {
          "oic.r.light": {
              "properties": {
                  "if": {
                      "default": "oic.if.baseline",
                      "description": "Interface supported",
                      "type": "string"
                  },
                  "intensity": {
                      "default": 1,
                      "description": "brightness of the light",
                      "maximum": 9,
                      "minimum": 1,
                      "type": "integer",
                      "update_frequency": 1001
                  },
                  "power": {
                      "default": "on",
                      "description": "Light status",
                      "enum": [
                          "on",
                          "off"
                      ],
                      "type": "string",
                      "update_frequency": 1000
                  },
                  "rt": {
                      "default": "oic.r.light",
                      "description": "Description about resource type",
                      "type": "string"
                  }
              },
              "type": "object"
          }
      },
      "required": [
          "rt",
          "if",
          "power"
      ],
      "title": "OIC Light"
  }