Returns the time (in ms) that should elapse before a tooltip will be
     * shown, in the situation when a tooltip has very recently been shown
     * (within {@link #getQuickOpenDelay()} ms).
Returns the time (in ms) that should elapse before a tooltip will be
     * shown, in the situation when a tooltip has very recently been shown
     * (within {@link #getQuickOpenDelay()} ms). | VTooltip.java