The top object of the deserialized graph.
The IFormatter.Deserialize(System.IO.Stream) method reads graph information from the stream and reconstructs a clone of the original graph. The topology of the graph is preserved.
The deserialization process allocates an empty object of the appropriate type and repopulates its fields from the data transmitted in the serializationStream stream. It is important to note that no constructor is ever called on the object during deserialization.