wp 2b theme translate

1function myfirsttheme_setup() {
2 
3    /**
4     * Make theme available for translation.
5     * Translations can be placed in the /languages/ directory.
6     */
7    load_theme_textdomain( 'myfirsttheme', get_template_directory() . '/languages' );
8    }
9    add_action( 'after_setup_theme', 'myfirsttheme_setup' );