I'm looking at [StateSpace class][ss] to understand better how `transitionMatrix` generally works. [ss]: https://github.com/open-risk/transitionMatrix/blob/95fca15989336ff4b80525115985a355ce20b9e1/transitionMatrix/model.py#L807-L940 I reviewed [state_space_operations.py](https://github.com/open-risk/transitionMatrix/blob/master/examples/python/state_space_operations.py) as usage example of [StateSpace class][ss] for data rating scales manipulation, but what file should be the next example to see? Many thanks for guidance!