package vrampal.connectfour.core.impl;

import vrampal.connectfour.core.Player;

interface GameEndListener {

  void drawGame();

  void victory(Player winner);

}

@@ -35,16 +35,48 @@
 mpl;%0D%0A%0D%0A
+import java.io.Serializable;%0D%0A%0D%0A
 import v
@@ -136,16 +136,37 @@
 istener 
+extends Serializable 
 %7B%0D%0A%0D%0A  v

Fix sonar violation