@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((a == null) ? 0 : a.hashCode());
result = prime * result + ((b == null) ? 0 : b.hashCode());
return result;
}
@Override
public int hashCode() {
int result = 0;
result = 31 * result + (which != null ? which.hashCode() : 0);
result = 31 * result + (first != null ? first.hashCode() : 0);
result = 31 * result + (second != null ? second.hashCode() : 0);
return result;
}
@Override
public int hashCode() {
final int prime = 307967729;
int result = 1;
result = prime * result + first.hashCode();
result = prime * result + second.hashCode();
return result;
}
