ChangeData cd = StoredValues.CHANGE_DATA.getOrNull(engine);
ApprovalTypes types = env.getInjector().getInstance(ApprovalTypes.class);
Iterable<PatchSetApproval> approvals;
if (cd != null) {
approvals = cd.currentApprovals(Providers.of(db));
} else {
approvals = db.patchSetApprovals().byPatchSet(patchSet.getId());
}
for (PatchSetApproval a : approvals) {