docs: def _adjust_n_years(other, n, month, reference_day):
      """Adjust the number of times an annual offset is applied based on
      another date, and the reference day provided"""
      if n > 0:
          if other.month < month or (other.month == month and
                                     other.day < reference_day):
              n -= 1
      else:
          if other.month > month or (other.month == month and
                                     other.day > reference_day):
              n += 1
      return n