* Add reference to oneOf schema
* Add model showing unit test failure with ref to oneOf schema
* Updates get_discriminator_class to return visited_composed_classes
* Fixes broken test, adds is_valid_type
* move unit test to test_drawing.py file
* Add more unit tests
* invoke git pull from spacether fork
* invoke git pull from spacether fork
* Improve unit tests
Co-authored-by: Justin Black <justin.a.black@gmail.com>
