GameHandler.PauseGame C# (CSharp) Method

    public static void PauseGame(bool pause)
    {
        GameHandler.Instance().pauseGame = pause;
        if(DataHolder.GameSettings().freezePause)
        {
            if(GameHandler.IsGamePaused()) GameHandler.FreezeTime(true);
            else GameHandler.FreezeTime(false);
        }
    }

 // update is called once per frame
 private void Update()
 {
     if (Input.GetKeyDown(KeyCode.Escape))
     {
         GameHandler.PauseGame();
     }
 }