code: def _get_combined_index(indexes, intersect=False, sort=False):
      indexes = _get_distinct_objs(indexes)
      if len(indexes) == 0:
          index = Index([])
      elif len(indexes) == 1:
          index = indexes[0]
      elif intersect:
          index = indexes[0]
          for other in indexes[1:]:
              index = index.intersection(other)
      else:
          index = _union_indexes(indexes, sort=sort)
          index = ensure_index(index)
      if sort:
          try:
              index = index.sort_values()
          except TypeError:
              pass
      return index