// NOP
                }
            }
        }

        final String id = encodedBuf.toString();
        return MessageDigestUtil.digest(ComponentUtil.getFessConfig().getIndexIdDigestAlgorithm(), id);
    }

    /**
     * Sets the maximum number of session IDs to include in session ID lists.
     * This controls the size limit for aggregation results when retrieving session lists.
     *