Less methods = smaller object.

src/engine/util/Pair.java

@@ -1,22 +1,14 @@
 package engine.util;
 
 public class Pair<A, B> {
-    private final A first;
-    private final B second;
+    public final A first;
+    public final B second;
 
     public Pair(A first, B second) {
         this.first = first;
         this.second = second;
     }
 
-    public A getFirst() {
-        return first;
-    }
-
-    public B getSecond() {
-        return second;
-    }
-
     @Override
     public String toString() {
         return "Pair{" + "first=" + first + ", second=" + second + '}';