Mark fields as pre-populatable in the WooCommerce Product Feeds extension

woocommerce-product-feeds-mark-fields-as-prepopulatable.php

<?php

/**
 * Plugin Name: WooCommerce Product Feeds : Mark fields as pre-populatable.
 * Plugin URI: https://www.ademti-software.co.uk/
 * Description: Marks fields in the Google Product Feed as pre-populatable.
 * Author: Ademti Software
 * Version: 1.0.0
 * Author URI: https://www.ademti-software.co.uk
 */

add_filter( 'woocommerce_gpf_all_product_fields', function ( $fields ) {
	$fields['age_group']['can_prepopulate'] = true;
	$fields['gender']['can_prepopulate']    = true;

return $fields;
} );