code: public Observable<ServiceResponseWithHeaders<Page<NodeFile>, FileListFromTaskHeaders>> listFromTaskWithServiceResponseAsync(final String jobId, final String taskId, final Boolean recursive, final FileListFromTaskOptions fileListFromTaskOptions) {
          return listFromTaskSinglePageAsync(jobId, taskId, recursive, fileListFromTaskOptions)
                  .concatMap(new Func1<ServiceResponseWithHeaders<Page<NodeFile>, FileListFromTaskHeaders>, Observable<ServiceResponseWithHeaders<Page<NodeFile>, FileListFromTaskHeaders>>>() {
                      @Override
                      public Observable<ServiceResponseWithHeaders<Page<NodeFile>, FileListFromTaskHeaders>> call(ServiceResponseWithHeaders<Page<NodeFile>, FileListFromTaskHeaders> page) {
                          String nextPageLink = page.body().nextPageLink();
                          if (nextPageLink == null) {
                              return Observable.just(page);
                          }
                          FileListFromTaskNextOptions fileListFromTaskNextOptions = null;
                          if (fileListFromTaskOptions != null) {
                              fileListFromTaskNextOptions = new FileListFromTaskNextOptions();
                              fileListFromTaskNextOptions.withClientRequestId(fileListFromTaskOptions.clientRequestId());
                              fileListFromTaskNextOptions.withReturnClientRequestId(fileListFromTaskOptions.returnClientRequestId());
                              fileListFromTaskNextOptions.withOcpDate(fileListFromTaskOptions.ocpDate());
                          }
                          return Observable.just(page).concatWith(listFromTaskNextWithServiceResponseAsync(nextPageLink, fileListFromTaskNextOptions));
                      }
                  });
      }
docs: Lists the files in a task's directory on its compute node.
  
  @param jobId The ID of the job that contains the task.
  @param taskId The ID of the task whose files you want to list.
  @param recursive Whether to list children of the task directory. This parameter can be used in combination with the filter parameter to list specific type of files.
  @param fileListFromTaskOptions Additional parameters for the operation
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;NodeFile&gt; object