public function setSaveHandler()
    {
        session_module_name( 'user' );
        session_set_save_handler(
            array( $this, 'open' ),
            array( $this, 'close' ),
            array( $this, 'read' ),
            array( $this, 'write' ),
            array( $this, 'destroy' ),
            array( $this, 'gc' )
            );
        return true;
    }