Issue #3133063 by jsacksick, mau18nm@gmail.com: Cannot change payment method...

   */

  public function getPanes() {

    $panes = parent::getPanes();

    // Create a blacklist of panes we disallow adding to steps.

    // Specify the list of panes to disable by default.

    // Once the payment is approved, the customer shouldn't go through the

    // payment gateway selection again, but hiding these panes by default

    // instead of removing them still allows the merchant to use them if needed.

    $black_list = [

      'contact_information',

      'payment_information',

      'payment_process',

    ];

    return array_diff_key($panes, array_combine($black_list, $black_list));

    foreach ($panes as $id => $pane) {

      if (!in_array($id, $black_list, TRUE)) {

        continue;

      }

      // Ensure we don't override existing configuration for these panes.

      if (!isset($this->configuration['panes'][$id])) {

        $pane->setStepId('_disabled');

      }

    }

    return $panes;

  }

  /**