code: public Set<String> configureJob(Job job) throws FileNotFoundException, IOException {
      Set<String> instanceFiles = new HashSet<String>();
      for (Map.Entry<Path, List<Input>> entry : multiInputs.entrySet()) {
        for (int inputId = 0; inputId < entry.getValue().size(); inputId++) {
          Input input = entry.getValue().get(inputId);
          instanceFiles.addAll(PangoolMultipleInputs.addInputPath(job, input.path, input.inputFormat,
              input.inputProcessor, input.specificContext, inputId));
        }
      }
      return instanceFiles;
    }
docs: Use this method for configuring a Job instance according to the multiple
  input specs that has been specified. Returns the instance files created.