code: def test_change_expiration_time():
      d = DHTLocalStorage()
      d.store(DHTID.generate("key"), b"val1", get_dht_time() + 1)
      assert d.get(DHTID.generate("key"))[0] == b"val1", "Wrong value"
      d.store(DHTID.generate("key"), b"val2", get_dht_time() + 200)
      time.sleep(1)
      assert (
          d.get(DHTID.generate("key"))[0] == b"val2"
      ), "Value must be changed, but still kept in table"
  
file_path: hivemind/tests/test_dht_storage.py
imports: import time
  from hivemind.dht.storage import DHTID, DHTLocalStorage, DictionaryDHTValue
  from hivemind.utils.serializer import MSGPackSerializer
  from hivemind.utils.timed_storage import get_dht_time
label_desc: Use image node_id 4 for calling a global function with example usage: test_change_expiration_time() without return types