docs: def cut_by_plane(self, plane, inverted=False):
          '''
          Like cut_across_axis, but works with an arbitrary plane. Keeps
          vertices that lie in front of the plane (i.e. in the direction
          of the plane normal).
  
          inverted: When `True`, invert the logic, to keep the vertices
            that lie behind the plane instead.
  
          Return the original indices of the kept vertices.
  
          '''
          vertices_to_keep = plane.points_in_front(self.v, inverted=inverted, ret_indices=True)
  
          self.keep_vertices(vertices_to_keep)
  
          return vertices_to_keep