@Override
            public Cancellable schedule(final Duration interval, final PunctuationType type, final Punctuator callback) {
                return context.schedule(interval, type, callback);
            }
Demonstrate the use of {@link MockProcessorContext} for testing the {@link Transformer} in the {@link WordCountTransformerDemo}.
streams/examples/src/test/java/org/apache/kafka/streams/examples/wordcount/WordCountTransformerTest.java