title: Create plist file via code
body: <p>I want to create a plist file like this:</p>
  
  <p><img src="https://i.stack.imgur.com/6V5Lam.png" alt="Not made with code."></p>
  
  <p>in code, and then it will be in the Caches folder. 
  I already know how to fetch the data.</p>