title: Deprecated PagerAdapter.instantiateItem() method
body: <p>I'm curious as to why <code>instantiateItem</code> was deprecated in favor of it's newer version. The change is that it now receives <code>ViewGroup</code> in stead of a more general <code>View</code>.</p>
  
  <p><strong>Deprecated method</strong></p>
  
  <pre><code>public Object instantiateItem (View container, int position)
  </code></pre>
  
  <p><strong>New method</strong></p>
  
  <pre><code>public Object instantiateItem (ViewGroup container, int position)
  </code></pre>
  
  <p>Note: This change also happened to <code>destroyItem</code>, <code>startUpdate</code>, <code>finishUpdate</code> &amp; <code>setPrimaryItem</code>.</p>