[WIP] Test the Pruning of Unused Definitions for Its Updated Phase in Metaschema Composition Pipeline

[aj-stein-nist]

Committer Notes

As part of usnistgov#198 and to ease collaboration with Wendell in usnistgov#199 to then package and combine our work into a final merge.

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[aj-stein-nist]

@wendellpiez, I finally got it working! haha. For now, I check for the exsitence of only 1 EXCEPTION which we are talking to adapt or redesign for debug logging around <EXCEPTION>Seeing ...</EXCEPTION> logging that is not technically an exception. I will build out some more logic throughout the day.