// Confirms that a particular event is ignored.
 private void verifyIgnore(FilterVerificationHelper filterHelper, ReplDBMSEvent e)
     throws ReplicatorException, InterruptedException {
   ReplDBMSEvent e2 = filterHelper.filter(e);
   assertNull("Should ignore event: seqno=" + e.getSeqno(), e2);
 }
 // Confirms that a particular event is accepted.
 private void verifyAccept(FilterVerificationHelper filterHelper, ReplDBMSEvent e)
     throws ReplicatorException, InterruptedException {
   ReplDBMSEvent e2 = filterHelper.filter(e);
   assertTrue("Should allow event, seqno=" + e.getSeqno(), e == e2);
 }