code: def benchmark_mitdb_record(rec, detector, verbose):
      
      sig, fields = rdsamp(rec, pb_dir='mitdb', channels=[0])
      ann_ref = rdann(rec, pb_dir='mitdb', extension='atr')
  
      qrs_inds = detector(sig=sig[:,0], fs=fields['fs'], verbose=verbose)
  
      comparitor = compare_annotations(ref_sample=ann_ref.sample[1:],
                                       test_sample=qrs_inds,
                                       window_width=int(0.1 * fields['fs']))
      if verbose:
          print('Finished record %s' % rec)
      return comparitor
docs: Benchmark a single mitdb record