title: How can i access the tag of button in CollectionView's cell contained in TableView cell
body: <p>I'm working on a project in which i have a <code>UICollectionView</code> in <code>UITableViewCell.</code> My View hierarchy is like below:</p>
  
  <ul>
  <li>TableViewCell
  
  <ul>
  <li>CollectionView
  
  <ul>
  <li>CollectionView Cell
  
  <ul>
  <li>Button(for which i want to access the know the tagValue).</li>
  </ul></li>
  </ul></li>
  </ul></li>
  </ul>
  
  <p>I have two table view cell and in each tableView cell there is a <code>UICollectionView</code> And each <code>UICollectionView</code> contain 4 <code>UICollectionViewCell</code>, So i want to know the exact tagValue of my button contained within a <code>UICollectionViewCell</code> whenever it is pressed.
  I have also given the tag value to button in <strong>cellForItem atIndexpath TableView cell class</strong> like so</p>
  
  <pre><code>cell.button.tag = indexpath.item
  </code></pre>
  
  <p>and i have also given selector to the button. </p>