boolean filterSystemApps = options.get(DeploymentFilterable.CLASSPATH_FILTER_SYSTEMAPPS, true);
try {
UrlSet urlSet = new UrlSet(classLoader);
timer.event("exclude system urls");
urlSet = urlSet.exclude(ClassLoader.getSystemClassLoader().getParent());
urlSet = urlSet.excludeJavaExtDirs();
urlSet = urlSet.excludeJavaEndorsedDirs();
urlSet = urlSet.excludeJavaHome();
urlSet = urlSet.excludePaths(System.getProperty("sun.boot.class.path", ""));