synchronized (instanceLock) {
            return stopActions;
        }
    }

    @Override
    public void maybeStop() {
        // We don't want to call stop actions with the lock held.
        ExecutionResult<Void> stopResult = ExecutionResult.forEach(getStopActions(), action -> action.accept(this));
        synchronized (instanceLock) {

                    if (forceAll || !serviceRegistration.provider.isKeepAlive()) {
                        serviceRegistration.provider.maybeStop();
                    } else {
                        preserved.add(serviceRegistration);
                    }
                }).rethrow();
            } finally {