@SuppressWarnings( "unchecked" )
	public BiConsumer<JTabbedPane, Integer> getTabCloseCallback() {
		return (BiConsumer<JTabbedPane, Integer>) getClientProperty( TABBED_PANE_TAB_CLOSE_CALLBACK );
	}
Returns the callback that is invoked when a tab close button is clicked.
The callback is responsible for closing the tab.
flatlaf-extras/src/main/java/com/formdev/flatlaf/extras/components/FlatTabbedPane.java