Create a Flag link programmatically and render flag link in twig template drupal 8

This article is refer to generate the flag link programmatically and render in drupal 8 twig template, before in drupal 7 its was quiet easy to render or generate flag link in just a single line of code. see below 

drupal 7 :

<?php flag_create_link('bookmarks', $node->nid); ?>

But In drupal 8 twig is comes in picture so to do in that we have to one extra step, see below 

Drupal 8: