code: public PagedList<NodeFile> listFilesFromTask(String jobId, String taskId, Boolean recursive, DetailLevel detailLevel) throws BatchErrorException, IOException {
          return listFilesFromTask(jobId, taskId, recursive, detailLevel, null);
      }
docs: Lists the files in the specified task's directory on its compute node.
  
  @param jobId The ID of the job.
  @param taskId The ID of the task.
  @param recursive If true, performs a recursive list of all files of the task. If false or null, returns only the files in the root task directory.
  @param detailLevel A {@link DetailLevel} used for filtering the list and for controlling which properties are retrieved from the service.
  @return A list of {@link NodeFile} objects.
  @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.