code: def get_neighbors_of_site_with_index(struct, n, approach="min_dist", delta=0.1, \
                                       cutoff=10.0):
      
  
      if approach == "min_dist":
          return MinimumDistanceNN(tol=delta, cutoff=cutoff).get_nn(
              struct, n)
      elif approach == "voronoi":
          return VoronoiNN(tol=delta, cutoff=cutoff).get_nn(
              struct, n)
      elif approach == "min_OKeeffe":
          return MinimumOKeeffeNN(tol=delta, cutoff=cutoff).get_nn(
              struct, n)
      elif approach == "min_VIRE":
          return MinimumVIRENN(tol=delta, cutoff=cutoff).get_nn(
              struct, n)
      else:
          raise RuntimeError("unsupported neighbor-finding method ({}).".format(
              approach))
docs: Returns the neighbors of a given site using a specific neighbor-finding
      method.
  
      Args:
          struct (Structure): input structure.
          n (int): index of site in Structure object for which motif type
                  is to be determined.
          approach (str): type of neighbor-finding approach, where
                "min_dist" will use the MinimumDistanceNN class,
                "voronoi" the VoronoiNN class, "min_OKeeffe" the
                MinimumOKeeffe class, and "min_VIRE" the MinimumVIRENN class.
          delta (float): tolerance involved in neighbor finding.
          cutoff (float): (large) radius to find tentative neighbors.
  
      Returns: neighbor sites.