title: Changing back button title to default < icon
body: <p>I made a custom back button but I want to change the title to the default arrow "&lt;" how do I do this? This is what I currently have</p>
  
  <pre><code>let newBackButton = UIBarButtonItem(title: "&lt;", style: UIBarButtonItemStyle.Plain, target: self, action: "back:")
  </code></pre>
  
  <p>I need "Back" to be the default "&lt;" icon. When I type it in as text it's just a small ugly text button.</p>
  
  <p><a href="https://i.stack.imgur.com/pTevH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/pTevH.png" alt="enter image description here"></a></p>