docs: public static void runWithContext(Runnable r) {
  		try {
  			browserStack.push(SwingFrame.getActiveWindow().getVisibleTab());
  			Subject.setCurrent(SwingFrame.getActiveWindow().getSubject());
  			r.run();
  		} finally {
  			Subject.setCurrent(null);
  			browserStack.pop();
  		}
  	}