protected void ToString(List <string> toStringOutput) { toStringOutput.Add($"LoyaltyAccountFilter = {(LoyaltyAccountFilter == null ? "null" : LoyaltyAccountFilter.ToString())}"); toStringOutput.Add($"TypeFilter = {(TypeFilter == null ? "null" : TypeFilter.ToString())}"); toStringOutput.Add($"DateTimeFilter = {(DateTimeFilter == null ? "null" : DateTimeFilter.ToString())}"); toStringOutput.Add($"LocationFilter = {(LocationFilter == null ? "null" : LocationFilter.ToString())}"); toStringOutput.Add($"OrderFilter = {(OrderFilter == null ? "null" : OrderFilter.ToString())}"); }