@Override
  protected void finishedPayload(byte[] pl) throws IOException {
    if (responseOpaque == terminalOpaque) {
      for (OperationCallback cb : callbacks.values()) {
        cb.receivedStatus(STATUS_OK);
        cb.complete();
      }
      transitionState(OperationState.COMPLETE);
    } else {
      OperationCallback cb = callbacks.remove(responseOpaque);
      assert cb != null : "No callback for " + responseOpaque;
      assert errorCode != 0 : "Got no error on a quiet mutation.";
      super.finishedPayload(pl);
    }
    resetInput();
  }
Construct an optimized get starting with the given get operation.
src/main/java/net/spy/memcached/protocol/binary/OptimizedSetImpl.java