code: public ServerBuilder tls(File keyCertChainFile, File keyFile,
                               Consumer<SslContextBuilder> tlsCustomizer) throws SSLException {
          defaultVirtualHostBuilderUpdated();
          defaultVirtualHostBuilder.tls(keyCertChainFile, keyFile, tlsCustomizer);
          return this;
      }
docs: Configures SSL or TLS of the default {@link VirtualHost} from the specified {@code keyCertChainFile},
  cleartext {@code keyFile} and {@code tlsCustomizer}.
  
  @throws IllegalStateException if the default {@link VirtualHost} has been set via
  {@link #defaultVirtualHost(VirtualHost)} already