问如何使用RestSharp实现分页

EN

public CallResult ListCalls(CallListRequest options, int pageNumber, int count)
{
    var request = new RestRequest();
    request.Resource = "Accounts/{AccountSid}/Calls.json";

    request.AddParameter("From", options.From);
    request.AddParameter("To", options.To);
    request.AddParameter("Url", options.Url);

    // send paging parameters required by API
    request.AddParameter("Page", pageNumber);
    request.AddParameter("PageSize", count);

    var client = new RestClient("http://example.com");
    return client.Execute<CallResult>(request);
}