Filter terms in HTML sitemap titles

filter-terms-headings-in-html-sitemap.php

add_filter('seopress_sitemaps_html_display_terms_only', 'sp_sitemaps_html_display_terms_only', 10, 2);
function sp_sitemaps_html_display_terms_only($display_terms_only, $cpt_key) {
	// Display terms only for products
	if ($cpt_key == 'product') {
		return true;
	}

    return $display_terms_only;
}

add_filter('seopress_sitemaps_html_term_name', 'sp_sitemaps_html_term_name', 10, 2);
function sp_sitemaps_html_term_name($term_name, $term) {
	// Modify term name for products
	if ($term->taxonomy == 'product_cat') {
		return 'Product Category: ' . $term_name;
	}
    return $term_name;
}

add_filter('seopress_sitemaps_html_terms_output', 'sp_sitemaps_html_terms_output', 10, 3);
function sp_sitemaps_html_terms_output($html, $terms, $cpt_key) {
	// Modify the terms HTML output
	if ($cpt_key == 'product') {
		return 'Product Terms: ' . $html;
	}
    return $html;
}