private static final boolean MASK_SECRET_VALUE = System.getProperty("jcifs.maskSecretValue", "true") == "true";
    private static final String SECRET_PATTERN = "^(smb.*:).*(@.*)$";
    private static final String SECRET_MASK_REPLACE = "$1******$2";

    /**
     * 
     */
    private Strings () {}


    /**
     * 
     * @param str