public static void setUserDir(File userDir) {
        Utils.userDir = StaticValue.mutateStaticValue(Utils.userDir, new FileInitializer(userDir));
    }
public static void setUserDir ( File userDir ) { Utils . userDir = StaticValue . mutateStaticValue ( Utils . userDir , new FileInitializer ( userDir ) ) ; }
This method should be called by common install kernel only.

@param userDir