code: public void addComputeNodeUser(String poolId, String nodeId, ComputeNodeUser user, Iterable<BatchClientBehavior> additionalBehaviors) throws BatchErrorException, IOException {
          ComputeNodeAddUserOptions options = new ComputeNodeAddUserOptions();
          BehaviorManager bhMgr = new BehaviorManager(this.customBehaviors(), additionalBehaviors);
          bhMgr.applyRequestBehaviors(options);
  
          this.parentBatchClient.protocolLayer().computeNodes().addUser(poolId, nodeId, user, options);
      }
docs: Adds a user account to the specified compute node.
  
  @param poolId The ID of the pool that contains the compute node.
  @param nodeId The ID of the compute node where the user account will be created.
  @param user The user account to be created.
  @param additionalBehaviors A collection of {@link BatchClientBehavior} instances that are applied to the Batch service request.
  @throws BatchErrorException Exception thrown when an error response is received from the Batch service.
  @throws IOException Exception thrown when there is an error in serialization/deserialization of data sent to/received from the Batch service.