code: def _other_pipeline_samples(summary_file, cur_samples):
      
      cur_descriptions = set([s[0]["description"] for s in cur_samples])
      out = []
      if utils.file_exists(summary_file):
          with open(summary_file) as in_handle:
              for s in yaml.safe_load(in_handle).get("samples", []):
                  if s["description"] not in cur_descriptions:
                      out.append(s)
      return out
docs: Retrieve samples produced previously by another pipeline in the summary output.