code: def set_settings(self, releases=None, default_release=None):
          
          if (self._storage is None or
                  getattr(self, 'releases', {}) != releases or
                  getattr(self, 'default_release', '') != default_release):
              self._storage = {}
              self.releases = releases or {}
              self.default_release = default_release
docs: set path to storage