add mySub

Author: shimonp21

gpkg/src/main/java/io/github/shimonp21/mynamespace/ShimonLib.java

@@ -14,10 +14,14 @@ public int myAdd(int x, int y) {
         logger.warn("hello, warning");
         logger.error("hello, error");
 
-        return x - y;
+        return x + y;
     }
 
     public int myMul(int x, int y) {
         return x * y;
     }
+
+    public int mySub(int x, int y) {
+        return x - y;
+    }
 }