多项选择题

A.Apply the OnDeserializing attribute to the ProcessChildren method.
B.Specify that Certkiller Class implements the IDeserializationCallback interface.
C.Specify that Certkiller Class inherits from the ObjectManager class.
D.Apply the OnSerialized attribute to the ProcessChildren method.
E.Create a GetObjectData method that calls ProcessChildren.
F.Create an OnDeserialization method that calls ProcessChildren.