code: def __call__(
      self, addr: str, *args: Any, **kwargs: Any
  ) -> PooledRPCShuffle:
      return PooledRPCShuffle(self.shuffles[addr])
  
file_path: distributed/distributed/shuffle/tests/utils.py
imports: from __future__ import annotations
  import itertools
  from typing import Any
  from distributed.core import PooledRPCCall
  from distributed.shuffle._core import ShuffleId, ShuffleRun
label_desc: Use image node_id 2 for calling the AbstractShuffleTestPool obj's underlying member method code with example usage: obj.__call__(addr) and returns: PooledRPCShuffle