Instagram\API\Request\LogoutRequest::execute PHP Method

    public function execute()
    {
        return parent::execute();
    }

 /**
  *
  * Logout
  *
  * @return API\Response\LogoutResponse
  * @throws Exception
  */
 public function logout()
 {
     if (!$this->isLoggedIn()) {
         throw new InstagramException("You must be logged in to call logout().");
     }
     $request = new LogoutRequest($this);
     return $request->execute();
 }