return relatedContentBhv.selectByPK(id);
    }

    /**
     * Stores (inserts or updates) a related content entity.
     * After storing, updates the related content helper to refresh the cache.
     *
     * @param relatedContent the RelatedContent entity to store
     */
    public void store(final RelatedContent relatedContent) {

import org.codelibs.fess.exception.InvalidQueryException;
import org.codelibs.fess.exception.ResultOffsetExceededException;
import org.codelibs.fess.helper.RelatedContentHelper;
import org.codelibs.fess.helper.RelatedQueryHelper;
import org.codelibs.fess.util.RenderDataUtil;
import org.lastaflute.taglib.function.LaFunctions;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.HtmlResponse;

/// tip

The *path operation* for `swagger_ui_redirect` is a helper for when you use OAuth2.

If you integrate your API with an OAuth2 provider, you will be able to authenticate and come back to the API docs with the acquired credentials. And interact with it using the real OAuth2 authentication.

Swagger UI will handle it behind the scenes for you, but it needs this "redirect" helper.

///

import org.codelibs.fess.crawler.exception.CrawlingAccessException;
import org.codelibs.fess.crawler.exception.MaxLengthExceededException;
import org.codelibs.fess.crawler.helper.ContentLengthHelper;
import org.codelibs.fess.crawler.helper.MimeTypeHelper;

import jakarta.annotation.Resource;

/**
 * FileSystemClient is CrawlerClient implementation to crawl files on a file
 * system.
 *
 * @author shinsuke
 *

import org.codelibs.fess.exception.ContentNotFoundException;
import org.codelibs.fess.helper.CrawlingConfigHelper;
import org.codelibs.fess.helper.CrawlingInfoHelper;
import org.codelibs.fess.helper.DuplicateHostHelper;
import org.codelibs.fess.helper.IndexingHelper;
import org.codelibs.fess.helper.PermissionHelper;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.mylasta.direction.FessConfig;

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.helper;

import java.io.IOException;

import org.apache.commons.text.StringEscapeUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.crawler.helper;

import java.util.HashMap;
import java.util.Map;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.crawler.exception.CrawlerSystemException;

/**
 * Helper class for managing content length limits based on MIME types.

import org.codelibs.fess.Constants;
import org.codelibs.fess.crawler.client.FesenClient;
import org.codelibs.fess.exception.ContainerNotAvailableException;
import org.codelibs.fess.helper.SuggestHelper;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.suggest.Suggester;

import org.codelibs.fess.app.web.api.admin.FessApiAdminAction;
import org.codelibs.fess.app.web.api.admin.searchlist.ApiAdminSearchlistAction;
import org.codelibs.fess.helper.CrawlingConfigHelper;
import org.codelibs.fess.helper.CrawlingInfoHelper;
import org.codelibs.fess.helper.LanguageHelper;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.thumbnail.ThumbnailManager;
import org.codelibs.fess.util.ComponentUtil;

import org.codelibs.fess.crawler.exception.CrawlerSystemException;
import org.codelibs.fess.crawler.exception.MimeTypeException;
import org.codelibs.fess.crawler.helper.MimeTypeHelper;

/**
 * MimeTypeHelperImpl is a helper class that detects the MIME type of a given input stream or filename.
 * It uses the Apache Tika library to detect the MIME type.
 *
 * <p>
 * This class provides methods to:
 * </p>