n-grid-filter>
       *   </template>
       *   <template>[[item.name.first]]</template>
       * </vaadin-grid-column>
       * ```
       *
       * @memberof Vaadin
       */
      class GridFilterElement extends (class extends Polymer.Element {}) {

        static get is() {
          return 'vaadin-grid-filter';
        }

        static get properties() {
          return {
            /**
             * JS Path of the property in the item used for filtering the data.
             */
            path