title: Remove specific compiled template with Twig 2
body: <p>I have a system that allows users to edit specific templates files from the GUI. After changing a template, the cache (compiled template) for that template file has te be cleared. In the previous version of Twig I was used to doing something like:</p>
  
  <pre><code>/**
   * @var Twig_Environment $twig
   */
  $cache = $twig-&gt;getCacheFilename('path/to/template/here.html.twig');
  
  if (file_exists($cache)) {
      unlink($cache);
  }
  </code></pre>
  
  <p>However, in Twig 2 the <code>getCacheFilename</code> was removed from the Twig_Environment. How can we clear the cache for a specific template using Twig 2? </p>