/**
  * Get Linkedin activities and add it to database
  *
  * @access public
  * @return void
  */
 public function getLinkedinUpdates()
 {
     $access_tokens = Access_token::getAllByTypeAndUserIdAsArray('linkedin', $this->user_id);
     foreach ($access_tokens as $access_token) {
         /* @var Socializer_Linkedin $linkedin */
         $linkedin = $this->socializer->factory('Linkedin', $this->user_id, $access_token);
         if ($linkedin) {
             $linkedin->getUpdates();
         }
     }
 }