term_links-product_cat │ filter-hook │ WC 1.0

This filter is documented in wp-includes/category-template.php

Usage

add_filter( 'term_links-product_cat', 'wp_kama_term_links_product_cat_filter' );

/**
 * Function for `term_links-product_cat` filter-hook.
 * 
 * @param  $links 
 *
 * @return 
 */
function wp_kama_term_links_product_cat_filter( $links ){
	// filter...
	return $links;
}

$links

-

Where the hook is called

$term_links = apply_filters( 'term_links-product_cat', $links ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores, WooCommerce.Commenting.CommentHooks.MissingSinceComment

Where the hook is used in WooCommerce