<function-signature>java.lang.String formatFileSize(long)</function-signature>
    <example>
      ${fe:formatFileSize(doc.content_length)}
    </example>
  </function>

  <function>
    <description>
      Returns formatted number from a given value.
    </description>
    <name>formatNumber</name>
    <function-class>org.codelibs.fess.taglib.FessFunctions</function-class>

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.service.DataConfigService;
import org.codelibs.fess.app.service.FileConfigService;
import org.codelibs.fess.app.service.WebConfigService;
import org.codelibs.fess.es.config.exbhv.DataConfigBhv;
import org.codelibs.fess.es.config.exbhv.FailureUrlBhv;
import org.codelibs.fess.es.config.exbhv.FileConfigBhv;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.service.RequestHeaderService;
import org.codelibs.fess.app.service.WebAuthenticationService;
import org.codelibs.fess.crawler.client.CrawlerClientFactory;
import org.codelibs.fess.crawler.client.http.Authentication;
import org.codelibs.fess.crawler.client.http.HcHttpClient;
import org.codelibs.fess.es.config.bsentity.BsWebConfig;

import org.codelibs.fess.ds.DataStoreFactory;
import org.codelibs.fess.ds.callback.IndexUpdateCallback;
import org.codelibs.fess.entity.DataStoreParams;
import org.codelibs.fess.es.client.SearchEngineClient;
import org.codelibs.fess.es.config.exentity.DataConfig;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ComponentUtil;
import org.opensearch.index.query.BoolQueryBuilder;

import org.codelibs.core.misc.DynamicProperties;
import org.codelibs.fess.Constants;
import org.codelibs.fess.annotation.Secured;
import org.codelibs.fess.app.web.base.FessAdminAction;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.mylasta.mail.TestmailPostcard;
import org.codelibs.fess.util.ComponentUtil;
import org.lastaflute.core.mail.Postbox;

import org.codelibs.fess.es.log.exentity.SearchLog;
import org.codelibs.fess.es.log.exentity.UserInfo;
import org.codelibs.fess.mylasta.action.FessUserBean;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.DocumentUtil;
import org.codelibs.fess.util.QueryResponseList;
import org.dbflute.optional.OptionalEntity;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.web.base.FessSearchAction;
import org.codelibs.fess.app.web.base.SearchForm;
import org.codelibs.fess.entity.SearchRenderData;
import org.codelibs.fess.entity.SearchRequestParams.SearchRequestType;
import org.codelibs.fess.exception.InvalidQueryException;
import org.codelibs.fess.exception.ResultOffsetExceededException;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.crawler.client.CrawlerClientFactory;
import org.codelibs.fess.crawler.client.ftp.FtpAuthentication;
import org.codelibs.fess.crawler.client.ftp.FtpClient;
import org.codelibs.fess.crawler.client.http.Authentication;
import org.codelibs.fess.crawler.client.http.HcHttpClient;
import org.codelibs.fess.crawler.client.http.form.FormScheme;

import org.codelibs.core.misc.Pair;
import org.codelibs.fess.Constants;
import org.codelibs.fess.crawler.util.CharUtil;
import org.codelibs.fess.exception.FessSystemException;
import org.codelibs.fess.mylasta.action.FessMessages;
import org.codelibs.fess.mylasta.action.FessUserBean;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.GsaConfigParser;

import org.codelibs.fess.helper.IndexingHelper;
import org.codelibs.fess.helper.IntervalControlHelper;
import org.codelibs.fess.helper.SearchLogHelper;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.ingest.IngestFactory;
import org.codelibs.fess.ingest.Ingester;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.DocList;