code: def _get_attrs(self):
          
          attrs = []
          attrs.append(("N Cells", self.GetNumberOfCells(), "{}"))
          attrs.append(("N Points", self.GetNumberOfPoints(), "{}"))
          bds = self.bounds
          attrs.append(("X Bounds", (bds[0], bds[1]), "{:.3e}, {:.3e}"))
          attrs.append(("Y Bounds", (bds[2], bds[3]), "{:.3e}, {:.3e}"))
          attrs.append(("Z Bounds", (bds[4], bds[5]), "{:.3e}, {:.3e}"))
          # if self.n_cells <= vtki.REPR_VOLUME_MAX_CELLS and self.n_cells > 0:
          #     attrs.append(("Volume", (self.volume), "{:.3e}"))
          return attrs
docs: An internal helper for the representation methods