code: def test_datasets_republish(client):
      key, value, value2 = "key", "value", "value2"
      client.publish_dataset(key=value)
      assert client.get_dataset(key) == value
  
      with pytest.raises(KeyError) as exc_info:
          client.publish_dataset(key=value)
  
      client.publish_dataset(key=value2, override=True)
      assert client.get_dataset(key) == value2
  
file_path: distributed/distributed/tests/test_publish.py
imports: from __future__ import annotations
  import asyncio
  import pytest
  from dask import delayed
  from distributed import Client
  from distributed.client import futures_of
  from distributed.metrics import time
  from distributed.protocol import Serialized
  from distributed.utils_test import gen_cluster, inc
label_desc: Use image node_id 9 for calling a global function with example usage: test_datasets_republish(client) without return types