title: How to force iCloud with core data to do sync?
body: <p>I'm using iCloud with core data to sync data of my App. </p>
  
  <p>I tried everything and finally It works perfectly. </p>
  
  <p>but I have one question.</p>
  
  <p>Is there any way that saying to iCloud to sync?</p>
  
  <p>It sync when app begin, but the other time. It seems like that it sync randomly. I can't find the way to handle it myself. </p>
  
  <p>any help? </p>
  
  <p>Thanks.</p>