### Question:
AnimUtils { public static Interpolator getFastOutSlowInInterpolator(Context context) { if (fastOutSlowIn == null) { fastOutSlowIn = AnimationUtils.loadInterpolator(context, android.R.interpolator.fast_out_slow_in); } return fastOutSlowIn; }  static Interpolator getFastOutSlowInInterpolator(Context context); static void marqueeAfterDelay(int delayInMillis, ThemedTextView marqueeView);  }### Answer:
@Test public void testGetFastOutSlowInInterpolator() throws NoSuchFieldException, IllegalAccessException { Field f = AnimUtils.class.getDeclaredField("fastOutSlowIn"); f.setAccessible(true); assertNull(f.get(null)); Interpolator result = AnimUtils.getFastOutSlowInInterpolator(ApplicationProvider.getApplicationContext()); assertNotNull(result); assertNotNull(f.get(null)); }