}
            }
            return source.getSource();
        }

        private void invalidateDispatchCache() {
            ensureAllWithLoggerInitialized();
            ensureAllWithoutLoggerInitialized();
        }

        void maybeAdd(final ListenerDetails listener) {
            if (type.isInstance(listener.listener)) {
                if (broadcasterLock.tryLock()) {
                    try {