code: public String createEphemeralSequential(final String path, final Object data) throws ZkInterruptedException,
                                                                                   IllegalArgumentException, ZkException,
                                                                                   RuntimeException {
          return create(path, data, CreateMode.EPHEMERAL_SEQUENTIAL);
      }
docs: Create an ephemeral, sequential node.
  
  @param path
  @param data
  @return created path
  @throws ZkInterruptedException if operation was interrupted, or a required reconnection got interrupted
  @throws IllegalArgumentException if called from anything except the ZooKeeper event thread
  @throws ZkException if any ZooKeeper exception occurred
  @throws RuntimeException if any other exception occurs