function doHide()
            {
                self._hidePopover();
                delete self._hidePopoverTimer;
            }
@constructor
@param {Element} panelElement
@param {function(Element, Event):Element|undefined} getAnchor
@param {function(Element, WebInspector.Popover):undefined} showPopover
@param {function()=} onHide
@param {boolean=} disableOnClick