*
       * @memberof Polymer.Templatize
       * @param {HTMLTemplateElement} template Template to templatize
       * @param {*} owner Owner of the template instances; any optional callbacks
       *   will be bound to this owner.
       * @param {*=} options Options dictionary (see summary for details)
       * @return {TemplateInstanceBase} Generated class bound to the template
       *   provided
       */
      templatize(template, owner, options) {
        options = options || {};
        if (template