docs: protected static void closeWelcomePage() {
  		final IIntroManager introManager = PlatformUI.getWorkbench().getIntroManager();
  		if (introManager != null) {
  			final IIntroPart intro = introManager.getIntro();
  			if (intro != null) {
  				introManager.closeIntro(intro);
  			}
  		}
  	}