code: def _sync(original, processed):
      
      for original_sample in original:
          original_sample[0]["peaks_files"] = {}
          for process_sample in processed:
              if dd.get_sample_name(original_sample[0]) == dd.get_sample_name(process_sample[0]):
                  for key in ["peaks_files"]:
                      if process_sample[0].get(key):
                          original_sample[0][key] = process_sample[0][key]
      return original
docs: Add output to data if run sucessfully.
      For now only macs2 is available, so no need
      to consider multiple callers.