title: How to call tasks from code in Grunt if helpers are gone
body: <p>Grunt is removing the helpers and this already happened in grunt-contrib.</p>
  
  <p>However I have a Grunt file relying on some custom tasks calling some of those helpers.
  Without helpers it breaks. I am just wondering what should be the correct way to replace those.</p>
  
  <p>I get it will be by calling the tasks directly in some way but I am not sure how. An example would help a lot since Grunt documentation is not updated yet.</p>
  
  <p>Thanks.</p>