title: What's the equivalent of Border Type in code?
body: <p><code>NSImageView</code> has a property called Border Type in Interface Builder:</p>
  
  <p><a href="https://i.stack.imgur.com/KCAWu.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KCAWu.png" alt="enter image description here"></a></p>
  
  <p>What is its equivalent in code?</p>