### Question:
EffectPropertiesValues { @Nonnull public List<Attributes> getValues() { return values; }  void add(final Attributes p); @Nonnull List<Attributes> getValues(); @Nullable LinearInterpolator toLinearInterpolator(); boolean containsTimeValues();  }### Answer:
@Test public void testEmpty() { assertTrue(effectValues.getValues().isEmpty()); }