### Question:
GameTime { public static GameTime getInstance () { return instance; } protected  GameTime(); static GameTime getInstance(); static long getStartTime(); long getTime(); void setTime(long time); float getDelta(); void setDelta(float delta); static final long START_TIME; }### Answer:
@Test public void testGetInstance () { GameTime instance = GameTime.getInstance(); assertNotNull(instance); GameTime instance1 = GameTime.getInstance(); assertEquals(instance, instance1); }