code: def enable_caching(self):
          "Enable the cache of this object."
          self.caching_enabled = True
          for c in self.values():
              c.enable_cacher(f enable_caching(self):
          "Enable the cache of this object."
          self.caching_enabled = True
          for c in self.values():
              c.enable_cacher()
docs: Enable the cache of this object.