tenantRepository->findByUuid($uuid); } public function findTenantById(int $id): ?array { return $this->tenantRepository->find($id); } public function existsDepartmentCode(string $code): bool { return $this->departmentRepository->existsByCode($code); } public function existsDepartmentByTenantAndDescription(int $tenantId, string $description): bool { return $this->departmentRepository->existsByTenantAndDescription($tenantId, $description); } }