@Test
public void testGenerateClientSecret() throws Exception {

    final String clientSecret = GuidGenerator.generateClientSecret();
    assertNotNull(clientSecret);
    assertTrue(clientSecret.length() == 20);
    System.out.println(clientSecret);
    for (int i = 0; i < 5; i++) {
        System.out.println(GuidGenerator.generateClientSecret());
    }
}