title: Adding Custom NSLayoutManager to UItextView that is created in Storyboard
body: <p>I want to use the custom layout manager for a textview that is referenced from storyboard. I know that we can subclass the NSLayoutManager and assign the layout to textview in code but I want to use the textview from storyboard.</p>
  <p>I found in NSTextcontainer class there is a method</p>
  <p><code>func replaceLayoutManager(_ newLayoutManager: NSLayoutManager)</code> to replace the <code>layout manager</code></p>
  <p>but I don't know how to use it for the textview created in the storyboard. kindly let me know is there is way to assign the custom layout manager for the textview created in storybard.</p>