Server/src/engine/util/Pair.java

package engine.util;

public class Pair<A, B> {
    public final A first;
    public final B second;

    public Pair(A first, B second) {
        this.first = first;
        this.second = second;
    }

    @Override
    public String toString() {
        return "Pair{" + "first=" + first + ", second=" + second + '}';
    }
}