title: Setting a divider between items in options menu
body: <p>I'm trying to add a divider to my toolbar option menu, and i can't make it to work.
  How can I add a divider as shown in the image below:</p>
  
  <p><a href="https://i.stack.imgur.com/UMhZt.png" rel="noreferrer"><img src="https://i.stack.imgur.com/UMhZt.png" alt="enter image description here"></a></p>
  
  <p>Thanks.</p>