code: def get(self):
          
          self.conn.connection._check_login()
          response = self.conn.connection._do_get("{}/{}".format(self.conn.connection._api_url, "types/System/instances")).json()
          all_system_objects = []
          for system_object in response:
              all_system_objects.append(self.conn.System.from_dict(system_object))
          return all_system_objects
docs: Returns a `list` of all the `System` objects to the cluster.  Updates every time - no caching.
          :return: a `list` of all the `System` objects known to the cluster.
          :rtype: list