@Override
            protected ApplicationEventProcessor create() {
                RequestManagers requestManagers = requestManagersSupplier.get();
                return new ApplicationEventProcessor(
                        logContext,
                        requestManagers,
                        metadata,
                        subscriptions
                );
            }
Creates a {@link Supplier} for deferred creation during invocation by
{@link ConsumerNetworkThread}.
clients/src/main/java/org/apache/kafka/clients/consumer/internals/events/ApplicationEventProcessor.java