def add_data_serializable_factory(self, factory_id, factory):
self.data_serializable_factories[factory_id] = factory<EOL>
Helper method for adding IdentifiedDataSerializable factory.
example:
    >>> my_factory = {MyPersonClass.CLASS_ID : MyPersonClass, MyAddressClass.CLASS_ID : MyAddressClass}
    >>> serialization_config.add_data_serializable_factory(factory_id, my_factory)

:param factory_id: (int), factory-id to register.
:param factory: (Dictionary), the factory dictionary of class-id:class-constructor-function pairs.