public async Task SelectInheritedReference()
{
Container container = GetODataContainer();
int orderId = (await container.Order
.Where(t => t.Date == new DateTimeOffset(new DateTime(2018, 01, 22, 10, 00, 01)))
.FirstAsync()).ID;
BaseDocument parentDoc = await container.Order.ByKey(orderId).ParentDocument.GetValueAsync();
Assert.IsNotNull(parentDoc);
Assert.AreEqual(typeof(Contract), parentDoc.GetType());
Assert.AreEqual("2018-0001", ((Contract)parentDoc).Number);
}
