@Override
    public Processor<K, Change<V>, K, Change<VOut>> get() {
        return new KTableTransformValuesProcessor(transformerSupplier.get());
    }
@Test
    public void shouldNotSendOldValuesByDefault() {
        final KTableTransformValues<String, String, String> transformValues =
            new KTableTransformValues<>(parent, new ExclamationValueTransformerSupplier(), null);

        final Processor<String, Change<String>, String, Change<String>> processor = transformValues.get();
        processor.init(context);

        doNothing().when(context).forward(new Record<>("Key", new Change<>("Key->newValue!", null), 0));

        processor.process(new Record<>("Key", new Change<>("newValue", "oldValue"), 0));
    }