[woocommerce_checkout_order_review]
WP_Hook Object
(
    [callbacks] => Array
        (
            [10] => Array
                (
                    [woocommerce_order_review] => Array
                        (
                            [function] => woocommerce_order_review
                            [accepted_args] => 1
                        )

                )

            [20] => Array
                (
                    [woocommerce_checkout_payment] => Array
                        (
                            [function] => woocommerce_checkout_payment
                            [accepted_args] => 1
                        )

                )

        )

    [priorities:protected] => Array
        (
            [0] => 10
            [1] => 20
        )

    [iterations:WP_Hook:private] => Array
        (
        )

    [current_priority:WP_Hook:private] => Array
        (
        )

    [nesting_level:WP_Hook:private] => 0
    [doing_action:WP_Hook:private] => 
)