Modelling a serialized object stream can include receiving a stream of bytes corresponding to the serialized form of a first object, creating an empty initial model for containing a generic object and a generic class, and, upon detection of a class from the stream, constructing a corresponding generic class object in the model using a processor. Upon detection of a new object from the stream, a corresponding generic object in the model can be constructed. Further objects and classes in the model that are associated with the generic objects and classes can be referenced.