public function __construct(User_ForgeUGroup $group, array $permissions, $users)
 {
     $this->id = $group->getId();
     $this->title = $group->getName();
     $this->description = $group->getDescription();
     $this->is_current = false;
     $this->permissions = $permissions;
     $this->users = $users;
 }
 public function __construct(User_ForgeUGroup $group = null)
 {
     $this->is_new = true;
     if ($group) {
         $this->id = $group->getId();
         $this->name = $group->getName();
         $this->description = $group->getDescription();
         $this->is_new = false;
     }
 }