@Override
        public KeyValueBytesStoreSupplier keyValueStore(final DslKeyValueParams params) {
            final KeyValueBytesStoreSupplier result = super.keyValueStore(params);
            capture.set(result);
            return result;
        }
NOTE: Header forwarding is undefined behavior, but we still want to understand the
behavior so that we can make decisions about defining it in the future.
streams/src/test/java/org/apache/kafka/streams/kstream/internals/KStreamKStreamOuterJoinTest.java