* This factory maintains a collection of web API managers and provides
 * functionality to find the appropriate manager for incoming requests.
 */
public class WebApiManagerFactory {

    /**
     * Default constructor.
     */
    public WebApiManagerFactory() {
        // Default constructor
    }

    /**
     * Array of registered web API managers.
     */
    protected WebApiManager[] webApiManagers = {};

            throws IOException, ServletException {
        final WebApiManagerFactory webApiManagerFactory = ComponentUtil.getWebApiManagerFactory();
        final WebApiManager webApiManager = webApiManagerFactory.get((HttpServletRequest) request);
        if (webApiManager == null) {
            chain.doFilter(request, response);
        } else {

        };

        // Setup WebApiManagerFactory that returns null
        WebApiManagerFactory factory = new WebApiManagerFactory() {
            @Override
            public WebApiManager get(HttpServletRequest req) {
                assertSame(request, req);
                return null;
            }
        };
        ComponentUtil.register(factory, "webApiManagerFactory");

        // Execute

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.crypto.CachedCipher;
import org.codelibs.core.misc.DynamicProperties;
import org.codelibs.fess.api.WebApiManagerFactory;
import org.codelibs.fess.auth.AuthenticationManager;
import org.codelibs.fess.cors.CorsHandlerFactory;
import org.codelibs.fess.crawler.client.CrawlerClientCreator;