*
 */
public class DocumentHelper {
    private static final Logger logger = LogManager.getLogger(DocumentHelper.class);

    /** Prefix used for encoded similar document hashes */
    protected static final String SIMILAR_DOC_HASH_PREFIX = "$";

    /**
     * Default constructor for DocumentHelper.
     * Creates a new document helper instance.
     */

		 -->
	</component>
	<component name="crawlingConfigHelper" class="org.codelibs.fess.helper.CrawlingConfigHelper">
	</component>
	<component name="documentHelper" class="org.codelibs.fess.helper.DocumentHelper">
	</component>
	<component name="fileTypeHelper" class="org.codelibs.fess.helper.FileTypeHelper">
	</component>
	<component name="indexingHelper" class="org.codelibs.fess.helper.IndexingHelper">

    private static final String PERMISSION_HELPER = "permissionHelper";

    private static final String QUERY_PARSER = "queryParser";

    private static final String DOCUMENT_HELPER = "documentHelper";

    private static final String ACTIVITY_HELPER = "activityHelper";

    private static final String LDAP_MANAGER = "ldapManager";

                } else if (similarDocHash != null) {
                    final DocumentHelper documentHelper = ComponentUtil.getDocumentHelper();
                    context.addQuery(boolQuery -> {
                        boolQuery.filter(QueryBuilders.termQuery(fessConfig.getIndexFieldContentMinhashBits(),
                                documentHelper.decodeSimilarDocHash(similarDocHash)));
                    });
                }