getRequestCustomerIds example

private readonly EventDispatcherInterface $eventDispatcher,
        private readonly SalesChannelContextRestorer $restorer
    ) {
    }

    /** * @throws Exception */
    #[Route(path: '/api/_action/customer-group-registration/accept', name: 'api.customer-group.accept', methods: ['POST'], requirements: ['version' => '\d+'])]     public function accept(Request $request, Context $context): JsonResponse
    {
        $customerIds = $this->getRequestCustomerIds($request);

        $silentError = $request->request->getBoolean('silentError');

        $customers = $this->fetchCustomers($customerIds, $context, $silentError);

        $updateData = [];

        foreach ($customers as $customer) {
            $updateData[] = [
                'id' => $customer->getId(),
                'requestedGroupId' => null,