@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + (getUntilFinished() == null ? 0 : getUntilFinished().hashCode());
result = prime * result + (parent == null ? 0 : parent.hashCode());
result = prime * result + (getBlock() == null ? 0 : getBlock().hashCode());
return result;
}
