ArrayList<DomainDataFile> dataFile = instance.getLastDataFiles();
Assert.assertNotNull("Import fail", dataFile);
Assert.assertTrue("Import fail", dataFile.size() > 0);
DomainDataFile domainSalesman = dataFile.get(0);
Assert.assertTrue(domainSalesman instanceof DomainSalesman);
DomainDataFile domainSalesman1 = dataFile.get(1);
Assert.assertTrue(domainSalesman1 instanceof DomainSalesman);
DomainDataFile domainCostumer = dataFile.get(2);
Assert.assertTrue(domainCostumer instanceof DomainCostumer);
DomainSales domainSales = (DomainSales) dataFile.get(5);
Assert.assertTrue(domainSales instanceof DomainSales);