if (Event::handle('StartJoinGroup', array($group, $this))) {
$join = Group_member::join($group->id, $this->id);
self::blow('profile:groups:%d', $this->id);
if (Event::handle('StartJoinGroup', array($group, $this))) {
$join = Group_member::join($group->id, $this->id);
self::blow('profile:groups:%d', $this->id);