docs: function (offset) {
  
              if (this.callbackID) {
                  ariaCoreTimer.cancelCallback(this.callbackID);
                  this.callbackID = null;
              }
  
              if (this._popup == null && this.ellipsesNeeded === true) {
  
                  this.callbackID = ariaCoreTimer.addCallback({
                      fn : this._showPopup,
                      scope : this,
                      delay : 500,
                      args : offset
                  });
              }
          }