docs: @Pure
  	public static ServiceLoader<SREBootstrap> getServiceLoader(boolean onlyInstalledInJRE) {
  		synchronized (SRE.class) {
  			ServiceLoader<SREBootstrap> sl = loader == null ? null : loader.get();
  			if (sl == null) {
  			    if (onlyInstalledInJRE) {
  					sl = ServiceLoader.loadInstalled(SREBootstrap.class);
  				} else {
  					sl = ServiceLoader.load(SREBootstrap.class);
  				}
  				loader = new SoftReference<>(sl);
  			}
  			return sl;
  		}
  	}