'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/' };

    private static final char PAD = '=';

    private static final byte[] DECODE_TABLE = new byte[128];
    static {
        for (int i = 0; i < DECODE_TABLE.length; i++) {
            DECODE_TABLE[i] = Byte.MAX_VALUE;
        }
        for (int i = 0; i < ENCODE_TABLE.length; i++) {

            assertEquals(128, crawlingInfoHelper.generateId(value.substring(0, 490)).length());
            assertEquals(128, crawlingInfoHelper.generateId(value.substring(0, 500)).length());
            assertEquals(128, crawlingInfoHelper.generateId(value.substring(0, 510)).length());
            assertEquals(128, crawlingInfoHelper.generateId(value.substring(0, 520)).length());