err = l.ActiveState.Listener.UnmarshalTo(listenerTyped)
		if err != nil {
			return nil, err
		}
		if listenerTyped.Name == model.VirtualInboundListenerName {
			for _, filterChain := range listenerTyped.FilterChains {
				for _, filter := range filterChain.Filters {
					hcm := &hcm.HttpConnectionManager{}
					if err := filter.GetTypedConfig().UnmarshalTo(hcm); err == nil {
						return hcm, nil
					}
				}
			}
		}

    }

    protected void createFilterChain() {
        FilterChain chain = createDefaultFilterChain();
        for (final Filter element : filterList) {
            chain = appendFilterChain(element, chain);
        }
        filterChain = chain;
    }

    protected FilterChain appendFilterChain(final Filter filter, final FilterChain chain) {
        return query -> filter.parse(query, chain);
    }

import org.lastaflute.web.util.LaRequestUtil;
import org.lastaflute.web.util.LaResponseUtil;
import org.opensearch.script.Script;

import jakarta.annotation.PostConstruct;
import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

public class SearchApiManager extends BaseApiManager {

import org.codelibs.fess.util.ResourceUtil;
import org.lastaflute.web.servlet.request.RequestManager;
import org.lastaflute.web.servlet.session.SessionManager;

import jakarta.annotation.PostConstruct;
import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletInputStream;
import jakarta.servlet.ServletOutputStream;
import jakarta.servlet.http.HttpServletRequest;

                          type: string
                        listener:
                          description: Match on envoy listener attributes.
                          properties:
                            filterChain:
                              description: Match a specific filter chain in a listener.
                              properties:
                                applicationProtocols: