public void AddTest()
{
IContentContainer container = getContainer();
TestContentType c = TestContentType.getARandomTestContentType(enforce_a_reference: true);
container.Add(c.single_reference.value);
foreach (var r in c.multi_reference)
{
container.Add(r.value);
}
container.Add(c);
Guid guid = c.guid;
var back_from_container = container.GetContent <TestContentType>(guid);
Assert.AreEqual(c.guid, back_from_container.guid);
Assert.IsTrue(c.samePropertiesValue(back_from_container));
Assert.AreEqual(c.GetType(), back_from_container.GetType());
}