/** Type identifier for character mapping dictionaries. */
    private static final String MAPPING = "mapping";

    /** List of character mapping items loaded from the mapping file. */
    List<CharMappingItem> mappingItemList;

    /**
     * Constructs a new CharMappingFile instance.
     *
     * @param id the unique identifier for this mapping file

						</mapping>
						<!-- temp (empty) -->
						<mapping>
							<directory>${packaging.fess.temp.dir}</directory>
						</mapping>
						<!-- dictionary (empty) -->
						<mapping>
							<directory>${packaging.fess.dictionary.dir}</directory>
							<filemode>755</filemode>
							<username>opensearch</username>
							<groupname>opensearch</groupname>
						</mapping>
						<!-- es/modules -->

                        if (values == null || values.length == 0 || StringUtil.isEmpty(values[0])) {
                            if (logger.isDebugEnabled()) {
                                logger.debug("Required parameter '{}' is missing or empty. Skip storing search parameters.", name);
                            }
                            return true;
                        }
                        return false;
                    }))) {

 *
 * # SP base URL (must match Audience URI configured in Okta)
 * saml.sp.base.url=https://your-fess-server.example.com
 * </pre>
 *
 * <h2>Optional Configuration</h2>
 * <pre>
 * # User attribute mapping
 * saml.attribute.group.name=groups
 * saml.attribute.role.name=roles
 *
 * # Default groups/roles for authenticated users
 * saml.default.groups=user
 * saml.default.roles=user
 * </pre>
 *