title: UINavigationBar Rounded Two Corners
body: <p>I want to round the top right and top left of the UINavigationBar.</p>
  
  <p>I know that there are functions for changing the views corner radius, but is it possible to do something similar to the standard UINavigationBar?</p>
  
  <p>If you don't know what I'm talking about, check out this:<br> 
  <img src="https://i.stack.imgur.com/uvflI.png" width="300"></p>
  
  <p>Thanks!</p>