     /**
             * The string indicating the sub-property which should be used as a label of the item.
             */
            labelPath: String,

            /**
             * The string indicating the sub-property which should be used as a value of the item.
             */
            valuePath: String,

            /**
             * The list of values corresponding to the given options.
             */
            value: {
              type: Array,
              notify: true,
              v