commerce-8.x-2.8/modules/payment/src/Event/PaymentEvents.php

<?php

namespace Drupal\commerce_payment\Event;

final class PaymentEvents {

  /**
   * Name of the event fired when payment gateways are loaded for an order.
   *
   * @Event
   *
   * @see \Drupal\commerce_payment\Event\FilterPaymentGatewaysEvent
   */
  const FILTER_PAYMENT_GATEWAYS = 'commerce_payment.filter_payment_gateways';

}