Inpsyde\MultilingualPress\MultilingualPress::register_sites_list_table_columns PHP Method

    private function register_sites_list_table_columns()
    {
        (new SitesListTableColumn('multilingualpress.relationships', __('Relationships', 'multilingual-press'), function ($id, $site_id) {
            switch_to_blog($site_id);
            $sites = \Inpsyde\MultilingualPress\get_available_language_names();
            restore_current_blog();
            unset($sites[$site_id]);
            return $sites ? '<div class="mlp_interlinked_blogs">' . join('<br>', array_map('esc_html', $sites)) . '</div>' : __('none', 'multilingual-press');
        }))->register();
        (new SitesListTableColumn('multilingualpress.site_language', __('Site Language', 'multilingual-press'), function ($id, $site_id) {
            $language = \Inpsyde\MultilingualPress\get_site_language($site_id);
            return '' === $language ? __('none', 'multilingual-press') : sprintf('<div class="mlp_site_language">%s</div>', esc_html(\Inpsyde\MultilingualPress\get_language_by_http_name(str_replace('_', '-', $language))));
        }))->register();
    }