code: @Deprecated
      public static SslContext newServerContext(File certChainFile, File keyFile) throws SSLException {
          return newServerContext(certChainFile, keyFile, null);
      }
docs: Creates a new server-side {@link SslContext}.
  
  @param certChainFile an X.509 certificate chain file in PEM format
  @param keyFile a PKCS#8 private key file in PEM format
  @return a new server-side {@link SslContext}
  @deprecated Replaced by {@link SslContextBuilder}