/**
  * @return
  * @throws SerializationException
  */
 public SerializableSdSystemBridge getSerializableSdSystemBridge() throws SerializationException {
   try {
     return new SerializableSdSystemBridge(
         _inputSdObject.getMemento(), _outputSdObject.getMemento());
   } catch (NullArgumentException e) {
     throw new SerializationException("Serialization failed because " + e.getMessage());
   }
 }