docs: function () {
              this.$TextInput._reactToChange.apply(this, arguments);
              var cfg = this._cfg;
              var dropDownIcon = this._getDropdownIcon();
              if (cfg.waiAria && dropDownIcon) {
                  if (cfg.disabled) {
                      dropDownIcon.setAttribute("aria-hidden", "true");
                      dropDownIcon.removeAttribute("tabindex");
                  } else {
                      dropDownIcon.removeAttribute("aria-hidden");
                      var tabIndex = cfg.tabIndex != null ? this._calculateTabIndex() : "0";
                      dropDownIcon.setAttribute("tabindex", tabIndex);
                  }
              }
          }