Gravity Forms Notification after a payment has been refunded

gistfile1.php

/**
 * Fires after a payment has been refunded
 *
 * @param array $entry The Entry object
 * @param array $action The action object
 * $action = array(
 *     'type' => 'cancel_subscription',     // Type can be
 *     'transaction_id' => '',              // What is the ID of the transaction made?
 *     'subscription_id' => '',             // What is the ID of the Subscription made?
 *     'amount' => '0.00',                  // Amount to charge?
 *     'entry_id' => 1,                     // What entry to check?
 *     'transaction_type' => '',
 *     'payment_status' => '',
 *     'note' => ''
 * );
 */
function gfroms_after_payment_refunded( $entry, $action ) {
	// Get the form where this entry is from
	$form = GFAPI::get_form( $entry['form_id'] );

	// Lets send a form notification with the action that has occured
	GFAPI::send_notifications( $form, $entry, rgar( $action, 'type' ) );
}
// Tells the notification to be sent only when this hook is found and to include the arguments ($entry and $action)
add_action( 'gform_post_payment_refunded', 'gfroms_after_payment_refunded',  10, 2 );