woocommerce_webhook_order_payload_filters filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_webhook_order_payload_filters', 'filter_function_name_3319' );
function filter_function_name_3319( $array ){
	// filter...

	return $array;
}

$array

-

Where the hook is called

$payload = WC()->api->WC_API_Orders->get_order( $resource_id, null, apply_filters( 'woocommerce_webhook_order_payload_filters', array() ) );

Where in WP core the hook is used WooCommerce