title: Canoncial way to retrieve the IntID of an content object based on Dexterity
body: <p>The five.intid documentation states the following pattern for retrieving the IntID for
  an object:</p>
  
  <pre><code>from five.intid import site
  intids = site.get_intids(app.plone)
  intid_obj = intids.getId(app.plone.restrictedTraverse('path/to/object')
  </code></pre>
  
  <p>Is this the canoncical way also in Plone or is there some helper/utility method
  available wrapping the code above?</p>