code: public LeafNode createNode(String nodeId) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
          return (LeafNode) createNode(nodeId, null);
      }
docs: Creates a node with default configuration.
  
  @param nodeId The id of the node, which must be unique within the
  pubsub service
  @return The node that was created
  @throws XMPPErrorException
  @throws NoResponseException
  @throws NotConnectedException
  @throws InterruptedException