public void RemoveKillEnemyListener(UnitKillEnemyListener handler)
 {
     if (!PostKillEnemy.Remove(handler))
     {
         DebugUtils.LogError(DebugUtils.Type.AI_Soldier, "Try to remove a unregister message!");
     }
 }
 public void RegisterKillEnemyListener(UnitKillEnemyListener handler)
 {
     PostKillEnemy.Add(handler);
 }