/**
  * Enables the selected thread.
  */
 public function enable()
 {
     if (!$this->board->getModeratorPermission('canEnableThread')) {
         return;
     }
     if ($this->thread != null && $this->thread->isDisabled) {
         $this->thread->enable();
         $this->thread->refresh();
         $this->addThread();
     }
 }