use SL::DB::MetaSetup::PurchaseInvoice;
use SL::DB::Manager::PurchaseInvoice;
+use SL::DB::Helper::LinkedRecords;
+use SL::DB::Helper::PriceTaxCalculator;
__PACKAGE__->meta->add_relationship(invoiceitems => { type => 'one to many',
class => 'SL::DB::InvoiceItem',