code: public B tls(File keyCertChainFile, File keyFile) throws SSLException {
          tls(keyCertChainFile, keyFile, null, sslContextBuilder -> { /* noop */ });
          return self();
      }
docs: Configures SSL or TLS of this {@link VirtualHost} with the specified {@code keyCertChainFile}
  and cleartext {@code keyFile}.