docs: def addORFs(fig, seq, minX, maxX, offsetAdjuster):
      """
      fig is a matplotlib figure.
      seq is a Bio.Seq.Seq.
      minX: the smallest x coordinate.
      maxX: the largest x coordinate.
      featureEndpoints: an array of features as returned by addFeatures (may be
          empty).
      offsetAdjuster: a function to adjust feature X axis offsets for plotting.
      """
      for frame in range(3):
          target = seq[frame:]
          for (codons, codonType, color) in (
                  (START_CODONS, 'start', 'green'),
                  (STOP_CODONS, 'stop', 'red')):
              offsets = list(map(offsetAdjuster, findCodons(target, codons)))
              if offsets:
                  fig.plot(offsets, np.tile(frame, len(offsets)), marker='.',
                           markersize=4, color=color, linestyle='None')
  
      fig.axis([minX, maxX, -1, 3])
      fig.set_yticks(np.arange(3))
      fig.set_ylabel('Frame', fontsize=17)
      fig.set_title('Subject start (%s) and stop (%s) codons' % (
          ', '.join(sorted(START_CODONS)), ', '.join(sorted(STOP_CODONS))),
          fontsize=20)