// 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.
     *

     * The value is, e.g. SHA-512 <br>
     * comment: Digest algorithm for index IDs.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getIndexIdDigestAlgorithm();

    /**
     * Get the value for the key 'index.user.initial_password'. <br>
     * The value is, e.g. admin <br>
     * comment: Initial password for the index user.