code: public SSLSocketChannel accept() throws IOException
      {
          SocketChannel sc = channel.accept();
          SSLEngine engine = sslContext.createSSLEngine();
          engine.setUseClientMode(false);
          return new SSLSocketChannel(sc, engine);
      }
docs: Accepts SSLSocketChannel. Connection is in server mode, but can be changed
  before read/write.
  @return
  @throws IOException