gistfile1.cs

var call = new XmlApiCall
{
    Codec = new XmlCodec(),
    Username = Settings.MeetingsManager,
    Password = Settings.Password,
    RequestAuthenticationMechanism = new OAuthWrapAuthenticationMechanism(OAuthToken)
};

var calendar = call.Get<WorkspaceCalendar>("v2/calendar/workspaces/123").Data;

Assert.AreEqual(calendar.Events.Count, PageUnderTest.Tasks.Count, "Number of tasks returned by the API and displayed in the page should be the same");