| This is a smoke test of dex conversion, which checks to see that | |
| assigning a reference variable to null works, as well as explicitly | |
| returning a null. | |
| This test compares emitted code against a known-good (via eyeballing) | |
| version, so it is possible for this test to spuriously fail if other | |
| aspects of conversion end up altering the output in innocuous ways. |