如何将类添加到Wordpress分页的上一页/下一页？(paginate_links)

function custom_paginate_links() {
    $args = array(
        'prev_text' => '上一页',
        'next_text' => '下一页',
        'type' => 'array',
        'before_page_number' => '<span class="page-number">',
        'after_page_number' => '</span>',
        'prev_next' => true,
        'prev_next_screen_reader_text' => ' ',
    );

    $paginate_links = paginate_links($args);

    if ($paginate_links) {
        echo '<div class="pagination">';
        foreach ($paginate_links as $link) {
            echo $link;
        }
        echo '</div>';
    }
}

<?php custom_paginate_links(); ?>