public void addAll(final List<UnsentRequest> requests) {
        Objects.requireNonNull(requests);
        if (!requests.isEmpty()) {
            requests.forEach(this::add);
        }
    }
Check if the code is disconnected and unavailable for immediate reconnection (i.e. if it is in reconnect
backoff window following the disconnect).
clients/src/main/java/org/apache/kafka/clients/consumer/internals/NetworkClientDelegate.java