docs: def _get_slice_request_data(self, index):
          '''
          Helper function which implements multi index requests for __getitem__.
          '''
          # Do a check on list indices for early error detection
          if not is_slice_or_dim_range(index):
              single_depth = self._get_single_depth(index)
              # Single value indices for first single_depth values
              if single_depth > 0:
                  # We have integer request first
                  subindicies = index[:single_depth]
                  sublist = self
                  # Use the other side of __getitem__ to grab subindices
                  for sind in subindicies:
                      sublist = sublist[sind]
                  # If we still have some index requests left or dimension
                  # restrictions, then return a FixedListSubset
                  if single_depth < len(index) or isinstance(sublist, FixedListSubset):
                      new_dim_ranges = self._combine_dimension_lists(self._dim_ranges, index)
                      return self.builder(sublist, *new_dim_ranges[single_depth:])
                  # Otherwise our sublist is actually an element of the
                  # original data, so just return it
                  else:
                      return sublist
          new_dim_ranges = self._combine_dimension_lists(self._dim_ranges, index)
          return self.builder(self._data, *new_dim_ranges)