title: Logout from Facebook programmatically iOS
body: <p>I am trying to logout from Facebook programmatically without using <code>FBSDKLoginButton</code> 
  i had search how could I do 
  i found this answer <a href="https://stackoverflow.com/questions/15680289/can-we-logout-facebook-programatically">Can we logout facebook programatically</a>
  but the problem is the <code>FBSession</code> is deprecated in new iOS FBSDK version  </p>
  
  <p>my question is 
  Is there any way to clear the fb session in the new iOS FBSDK version? if there any way to logout from Facebook programmatically?
  or how could I call the logout action from <code>FBSDKLoginButton</code></p>
  
  <p>Thanking in advance
  :)</p>