private void expectExecuteTaskReconfiguration(boolean running, ConnectorConfig connectorConfig, Answer<List<Map<String, String>>> answer) {
        when(worker.isRunning(CONN1)).thenReturn(running);
        if (running) {
            when(worker.getPlugins()).thenReturn(plugins);
            when(worker.connectorTaskConfigs(CONN1, connectorConfig)).thenAnswer(answer);
        }
    }
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