public void PrimaryKeysTest()
 {
     TSqlModel Model = new TSqlModel(@"DacToolsDb.dacpac");
     foreach (var table in Model.Tables())
     {
         Assert.IsNotNull(table.PrimaryKeyColumns());
         Assert.IsTrue(table.PrimaryKeyColumns().Count > 0);
         foreach (var column in table.PrimaryKeyColumns())
         {
             Assert.IsFalse(string.IsNullOrEmpty(column.Name.ToString()));
         }
     }
 }