title: iOS: Find out if an image is used in some xib
body: <p>I want to find out which images in the project are actually used. When I try to find names of images that were set programaticly, I can see them in the relevant classes when searching. This is not the case for images that were set in the xib. Is there some workaround to find if the image is used in some xib? </p>
  
  <p><img src="https://i.stack.imgur.com/04Tgo.png" alt="screenshot"></p>