public void gotData(String key, int flags, byte[] data) {
    Collection<GetOperation.Callback> cbs = callbacks.get(key);
    assert cbs != null : "No callbacks for key " + key;
    for (GetOperation.Callback c : cbs) {
      c.gotData(key, flags, data);
    }
  }
Proxy callback used for dispatching callbacks over optimized gets.
src/main/java/net/spy/memcached/protocol/ProxyCallback.java