code: def update_link(self):
          
          name = repr(self)
          if not name:
              return self
          l = self.__class__._get_links()
          to_be_changed = list()
          if name in l:
  
              for wal in l[name]:
                  if wal.ref_obj and self is not wal():
                      to_be_changed.append((wal.ref_obj, wal.attr))
  
          for o, a in to_be_changed:
              setattr(o, a, self)
  
          self.clean_up_link_dict()
          return self
docs: redirects all links to self (the new linked object)