@Override
    public <K, V> void forward(final FixedKeyRecord<K, V> record) {
        forward(new Record<>(record.key(), record.value(), record.timestamp(), record.headers()));
    }
No-op. This should only be called on GlobalStateStore#flush and there should be no child nodes
streams/src/main/java/org/apache/kafka/streams/processor/internals/GlobalProcessorContextImpl.java