public static function limitationValues( $groupID )
    {
        $group = self::fetchById( $groupID );
        $states = array();

        if ( $group !== false )
            $states = $group->attribute( 'states' );

        $limitationValues = array();
        foreach ( $states as $state )
        {
            $limitationValues[] = array( 'name' => $state->attribute( 'current_translation' )->attribute( 'name' ),
                                         'id'   => $state->attribute( 'id' ) );
        }

        return $limitationValues;
    }