woocommerce_json_search_found_categories filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_json_search_found_categories', 'filter_function_name_7168' );
function filter_function_name_7168( $found_categories ){
	// filter...

	return $found_categories;
}

$found_categories

-

Where the hook is called

wp_send_json( apply_filters( 'woocommerce_json_search_found_categories', $found_categories ) );

Where in WP core the hook is used WooCommerce