public static JettyService of(Server jettyServer, @Nullable String hostname, boolean tlsReverseDnsLookup) {
        requireNonNull(jettyServer, "jettyServer");
        return new JettyService(hostname, tlsReverseDnsLookup, blockingTaskExecutor -> jettyServer,
                                unused -> { /* unused */ });
    }
Creates a new {@link JettyService} from an existing Jetty {@link Server}.

@param jettyServer the Jetty {@link Server}
@param hostname the default hostname, or {@code null} to use Armeria's default virtual host name.
@param tlsReverseDnsLookup whether perform reverse DNS lookup for the remote IP address on a TLS
                           connection. See {@link JettyServiceBuilder#tlsReverseDnsLookup(boolean)}
                           for more information.
jetty/jetty11/src/main/java/com/linecorp/armeria/server/jetty/JettyService.java