se ejecuto limpieza del codigo, reformateo del codigo y optimizacion de los imports por parte del IDE

src/danielcortes/xyz/utils/NaturalOrderComparator.java

@@ -22,7 +22,7 @@
 
 package danielcortes.xyz.utils;
 
-import java.util.*;
+import java.util.Comparator;
 
 public class NaturalOrderComparator implements Comparator {
     int compareRight(String a, String b) {

src/danielcortes/xyz/utils/Pair.java

@@ -26,7 +26,7 @@ package danielcortes.xyz.utils;
 
 import java.util.Objects;
 
-public class Pair<L,R> {
+public class Pair<L, R> {
     private final L left;
     private final R right;
 
@@ -35,8 +35,13 @@ public class Pair<L,R> {
         this.right = right;
     }
 
-    public L getLeft() { return left; }
-    public R getRight() { return right; }
+    public L getLeft() {
+        return left;
+    }
+
+    public R getRight() {
+        return right;
+    }
 
     @Override
     public boolean equals(Object o) {

src/danielcortes/xyz/utils/StringUtils.java

@@ -25,7 +25,7 @@
 package danielcortes.xyz.utils;
 
 public class StringUtils {
-    public static String capitalize(String string){
+    public static String capitalize(String string) {
         return string.substring(0, 1).toUpperCase() + string.substring(1);
     }
 }