code: def last(self):
          
          if self.type == HoloMap:
              last_items = [(k, v.last if isinstance(v, HoloMap) else v)
                            for (k, v) in self.data.items()]
          else:
              last_items = self.data
          return self.clone(last_items)
docs: The last of a GridSpace is another GridSpace
          constituted of the last of the individual elements. To access
          the elements by their X,Y position, either index the position
          directly or use the items() method.