twenty_twenty_one_get_starter_content example

            )
        );

        /* * Adds starter content to highlight the theme on fresh sites. * This is done conditionally to avoid loading the starter content on every * page load, as it is a one-off operation only needed once in the customizer. */
        if ( is_customize_preview() ) {
            require get_template_directory() . '/inc/starter-content.php';
            add_theme_support( 'starter-content', twenty_twenty_one_get_starter_content() );
        }

        // Add support for responsive embedded content.         add_theme_support( 'responsive-embeds' );

        // Add support for custom line height controls.         add_theme_support( 'custom-line-height' );

        // Add support for link color control.         add_theme_support( 'link-color' );