private void dumpHeader( PrintWriter out ) {
		Class<?> lookAndFeelClass = lookAndFeel instanceof MyBasicLookAndFeel
			? BasicLookAndFeel.class
			: lookAndFeel.getClass();
		out.printf( "Class  %s%n", lookAndFeelClass.getName() );
		out.printf( "ID     %s%n", lookAndFeel.getID() );
		out.printf( "Name   %s%n", lookAndFeel.getName() );
		out.printf( "Java   %s%n", System.getProperty( "java.version" ) );
		out.printf( "OS     %s%n", System.getProperty( "os.name" ) );
	}
Dumps look and feel UI defaults to files.

@author Karl Tauber
flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/uidefaults/UIDefaultsDump.java