public static boolean isAnonymousUser(final String customerId) {
    return customerId != null && customerId.toLowerCase(Locale.ROOT).equals(
        CONFLUENT_SUPPORT_CUSTOMER_ID_DEFAULT);
  }
@Test
  public void testValidAnonymousUser() {
    for (String validId : CustomerIdExamples.VALID_ANONYMOUS_IDS) {
      assertTrue(validId + " is an invalid anonymous user identifier",
          BaseSupportConfig.isAnonymousUser(validId));
    }
  }