getDesignationRefunds method

Will get a collection of PcoGivingDesignationRefund objects (expecting many) using a path like this: https://api.planningcenteronline.com/giving/v2/donations/1/refund/1/designation_refunds

Implementation

Future<PcoCollection<PcoGivingDesignationRefund>> getDesignationRefunds(
    {PcoGivingDesignationRefundQuery? query}) async {
  query ??= PcoGivingDesignationRefundQuery();
  var url = '$apiEndpoint/designation_refunds';
  return PcoCollection.fromApiCall<PcoGivingDesignationRefund>(url,
      query: query, apiVersion: apiVersion);
}