public IActionResult GetApiKeys([FromQuery] int page = 1, [FromQuery] int elementsPerPage = 10)
        {
            IEnumerable <ApiKey> keys          = ApiKeyService.GetAllApiKeys();
            IEnumerable <ApiKey> paginatedKeys = keys.Skip((page - 1) * elementsPerPage).Take(elementsPerPage);

            return(Ok(new PaginatedResponse(paginatedKeys.Select(k => new ApiKeyResponse(k)), keys.Count())));
        }