CommonServerMessageBlockRequest nextHead = null;
            int totalSize = 0;
            int n = 0;
            CommonServerMessageBlockRequest last = null;
            CommonServerMessageBlockRequest chain = curHead;
            while (chain != null) {
                n++;
                final int size = chain.size();
                final int cost = chain.getCreditCost();

    }

    <T extends CommonServerMessageBlockResponse> T send(CommonServerMessageBlockRequest request, T response) throws CIFSException {
        return send(request, response, Collections.<RequestParam> emptySet());
    }

    <T extends CommonServerMessageBlockResponse> T send(CommonServerMessageBlockRequest request, T response, Set<RequestParam> params)
            throws CIFSException {