public override bool include(RevWalk walker, RevCommit cmit)
 {
     // Since the walker sorts commits by commit time we can be
     // reasonably certain there is nothing remaining worth our
     // scanning if this commit is before the point in question.
     //
     if (cmit.getCommitTime() < when)
         throw StopWalkException.INSTANCE;
     return true;
 }
 public override bool include(RevWalk walker, RevCommit cmit)
 {
     return cmit.getCommitTime() <= when;
 }