public void SetUp()
{
_instance = Builder <PlanReceiptOrder> .CreateNew()
.WithConstructor(() => new PlanReceiptOrder(100))
.With(x => x.PlanCertificates, Builder <PlanCertificate> .CreateListOfSize(1).Build())
.Build();
_instance.PlanCertificates[0].PlanReceiptOrder = _instance;
_copyContext = new CopyContext <PlanReceiptOrder>();
_copyContext.SetSourceValue(_instance);
}