Consider Blocking session.close()

[rajivsarvepalli]

Currently session.close() should close off the session, however maybe this is undesired behavior. In many test cases, this session object will be passed to other functions which may close the session. This makes checking the session for the correct additions/deletions harder since you need to make sure not close the session while testing inside functions. If the UnifiedAlchemyMagicMock is the session being used maybe closing the session.close() is obnoxious to deal with. Maybe some other command could close the session?