@SuppressWarnings("NonApiType")
    @NonNull LinkedList<ServiceWrapper<? extends Service<Context, Response>>> queue() {
        synchronized (this.lock) {
            return new LinkedList<>(this.implementations);
        }
    }
Returns a queue containing all implementations.

@return queue containing all implementations
cloud-services/src/main/java/org/incendo/cloud/services/ServiceRepository.java