### Question:
ValuedListProperty extends ValuedProperty<List<T>> { @Nullable @Override public String describeDefault() { return PropertyUtils.describeObjectList(getDefaultValue()); } ValuedListProperty(@NotNull final String key, @NotNull final ValueParser<List<T>> valueParser, final List<T> defaultValue); @Override boolean isCommaSeparated(); @Nullable @Override String describeDefault();  }### Answer:
@Test public void describeDefault() { final Property testProperty = new TestListProperty("key", emptyList()); Assertions.assertNotNull(testProperty.describeDefault(), "The default value description should be set."); }