code: @Override
      public void readFragmentFrom(MwsReader r) {
          sellerId = r.read("SellerId", String.class);
          createdAfter = r.read("CreatedAfter", XMLGregorianCalendar.class);
          createdBefore = r.read("CreatedBefore", XMLGregorianCalendar.class);
          lastUpdatedAfter = r.read("LastUpdatedAfter", XMLGregorianCalendar.class);
          lastUpdatedBefore = r.read("LastUpdatedBefore", XMLGregorianCalendar.class);
          orderStatus = r.readList("OrderStatus", "Status", String.class);
          marketplaceId = r.readList("MarketplaceId", "Id", String.class);
          fulfillmentChannel = r.readList("FulfillmentChannel", "Channel", String.class);
          paymentMethod = r.readList("PaymentMethod", "Method", String.class);
          buyerEmail = r.read("BuyerEmail", String.class);
          sellerOrderId = r.read("SellerOrderId", String.class);
          maxResultsPerPage = r.read("MaxResultsPerPage", Integer.class);
          tfmShipmentStatus = r.readList("TFMShipmentStatus", "Status", String.class);
      }
docs: Read members from a MwsReader.
  
  @param r
  The reader to read from.