code: function (enable) {
              if (enable && !this._isIE7OrLess) {
                  this.$logWarn(this.INVALID_HASHPOLLING_TRIGGER);
              }
              enable = enable && this._isIE7OrLess;
              if (enable && !this._enableIEpolling) {
                  this._enableIEpolling = enable;
                  this._hashPoll();
              } else {
                  this._enableIEpolling = enable;
              }
          }
docs: Enable/disable the IE7 hash polling. The hash polling is automatically enabled when on IE7. It is still
  possible to disable it. It is not possible to enable it if you are not on IE7.
  @param {Boolean} enable whether the hash polling should be enabled or not