@Override
  public void start() throws ReplicationException {
    if (!overrideStart) {
      super.start();
      return;
    }
    startupLatch.countDown();
    started = true;
  }
Static construction helper
@param verifiableProperties the {@link VerifiableProperties} to use for config.
@param storageManager the {@link StorageManager} to use.
@param clusterMap the {@link ClusterMap} to use.
@param dataNodeId the {@link DataNodeId} to use.
@param storeKeyConverterFactory the {@link StoreKeyConverterFactory} to use.
@return an instance of {@link MockReplicationManager}
@throws ReplicationException
ambry-replication/src/test/java/com/github/ambry/replication/MockReplicationManager.java