if (tooltip != null) {
Tooltip.install(this, tooltip);
oldTooltip = tooltip;
}
listener.registerChangeListener(tab.closableProperty(), "CLOSABLE");
listener.registerChangeListener(tab.selectedProperty(), "SELECTED");
listener.registerChangeListener(tab.textProperty(), "TEXT");
listener.registerChangeListener(tab.graphicProperty(), "GRAPHIC");
listener.registerChangeListener(tab.contextMenuProperty(), "CONTEXT_MENU");
listener.registerChangeListener(tab.tooltipProperty(), "TOOLTIP");