Sets the time (in ms) that determines when {@link #getQuickOpenDelay()}
     * should be used instead of {@link #getOpenDelay()}. The quick open delay
     * is used when the tooltip has very recently been shown, is currently
     * hidden but about to be shown again.
Sets the time (in ms) that determines when {@link #getQuickOpenDelay()}
     * should be used instead of {@link #getOpenDelay()}. The quick open delay
     * is used when the tooltip has very recently been shown, is currently
     * hidden but about to be shown again. | VTooltip.java