code: def stored_bind(self, instance):
          
  
          if self.id is None:
              return self.bind(instance)
  
          store = self._bound_pangler_store.setdefault(instance, {})
          p = store.get(self.id)
          if p is None:
              p = store[self.id] = self.bind(instance)
          return p
docs: Bind an instance to this Pangler, using the bound Pangler store.
  
          This method functions identically to `bind`, except that it might
          return a Pangler which was previously bound to the provided instance.