Fix attribute equals and hashcode to exclude internal (transient) data attributes
The story of the bug "Fix attribute equals and hashcode to exclude internal (transient) data attributes" and how each model did on it.
Models fixed it in 5 of 6 recorded runs. The bug is in commit ea6d5ba of the repository's git history and the real fix is commit 118acb6. A model gets the code at the first commit and the repository's own tests decide if it fixed the bug.