if ( ! function_exists('provance_wa_number') ) {
    function provance_wa_number() {
        return '5521993118870'; // WhatsApp Armando - Provance
    }
}

if ( ! function_exists('provance_wa_link') ) {
    function provance_wa_link( $text = '' ) {
        $base = 'https://wa.me/' . provance_wa_number();
        if ( ! empty($text) ) {
            $base .= '?text=' . rawurlencode( $text );
        }
        return $base;
    }
}
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="https://provance.com.br/wp-sitemap-index.xsl" ?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><sitemap><loc>https://provance.com.br/wp-sitemap-posts-post-1.xml</loc></sitemap><sitemap><loc>https://provance.com.br/wp-sitemap-posts-page-1.xml</loc></sitemap><sitemap><loc>https://provance.com.br/wp-sitemap-taxonomies-category-1.xml</loc></sitemap><sitemap><loc>https://provance.com.br/wp-sitemap-users-1.xml</loc></sitemap></sitemapindex>