private SessionKey expectNewSessionKey() {
        SecretKey secretKey = mock(SecretKey.class);
        when(secretKey.getAlgorithm()).thenReturn(INTER_WORKER_KEY_GENERATION_ALGORITHM_DEFAULT);
        when(secretKey.getEncoded()).thenReturn(new byte[32]);
        return new SessionKey(secretKey, time.milliseconds() + TimeUnit.DAYS.toMillis(1));
    }
Issues multiple rapid fencing requests for a handful of connectors, each of which takes a little while to complete.
This mimics what might happen when a few connectors are reconfigured in quick succession and each task for the
connector needs to hit the leader with a fencing request during its preflight check.
connect/runtime/src/test/java/org/apache/kafka/connect/runtime/distributed/DistributedHerderTest.java