private string GetAuthenticationParameters()
{
if (AppKey.NullOrEmpty())
{
return string.Empty; // passing an access token makes the app key a required parameter.
}
IList<QueryParam> parameters = new List<QueryParam>();
parameters.Add(new QueryParam(Shared.AppKeyParameter, AppKey));
parameters.Add(new QueryParam(Shared.AccessTokenParameter, AccessToken));
return parameters.Deserialize();
}