private Uri SettingsApi(string surveyId, string id)
{
StringBuilder uriText = new StringBuilder(ConnectionClient.NfieldServerUri.AbsoluteUri);
uriText.AppendFormat("Surveys/{0}/Settings", surveyId);
if (!string.IsNullOrEmpty(id))
uriText.AppendFormat("/{0}", id);
return new Uri(uriText.ToString());
}