woocommerce, generate "woocommerce-checkout-payment" fragments html

function woocommerce_get_checkout_payment_url( $order_id = null ) {
  if ( ! is_checkout() ) {
    return;
  }
  if ( ! $order_id ) {
    $order = wc_get_checkout_order_received_url();
  } else {
    $order = wc_get_checkout_order_received_url( $order_id );
  }
  return apply_filters( 'woocommerce_get_checkout_payment_url', $order ? wp_nonce_url( add_query_arg( 'order', $order->get_id(), add_query_arg( 'key', $order->get_order_key(), wc_get_endpoint_url( 'order-pay', $order_id, wc_get_page_permalink( 'checkout' ) ) ) ), 'woocommerce-pay' ) : wc_get_checkout_url(), $order );
}

function woocommerce_order_button_html( $button_