protected void consolidateLibDir(File tomcatRoot) {
Set<String> requiredLibs = _differ.getRequiredLibNames();
for (String lib : _differ.getInstalledLibNames()) {
if (lib.startsWith("h2-")) continue; // h2 db driver is also needed
if (!requiredLibs.contains(lib)) {
FileUtil.delete(tomcatRoot, FileUtil.buildPath("yawllib", lib));
}
}
}
