docs: def override_familly(self, args):
          """Look in the current wrapped object to find a cache configuration to
          override the current default configuration."""
          resourceapi = args[0]
          cache_cfg = resourceapi.cache
          if cache_cfg.has_key('familly'):
              self.familly = cache_cfg['familly']
          if cache_cfg.has_key('whole_familly'):
              self.whole_familly = cache_cfg['whole_familly']
          if self.familly is None:
              raise Exception("Invalid familly value for Cache decorator.")