doc.detailTax do
              doc.taxIncludedInTotal(line_item[:tax_included_in_total]) if line_item[:tax_included_in_total]
              doc.taxAmount(line_item[:tax_amount]) if line_item[:tax_amount]
              doc.taxRate(line_item[:tax_rate]) if line_item[:tax_rate]
              doc.taxTypeIdentifier(line_item[:tax_type_identifier]) if line_item[:tax_type_identifier]