public CallBroadcastStats GetStats(long id, string fields = null, DateTime? begin = null, DateTime? end = null)
{
var queryParams = new List<KeyValuePair<string, object>>(3);
ClientUtils.AddQueryParamIfSet("fields", fields, queryParams);
ClientUtils.AddQueryParamIfSet("begin", begin, queryParams);
ClientUtils.AddQueryParamIfSet("end", end, queryParams);
String path = CB_ITEM_STATS_PATH.ReplaceFirst(ClientConstants.PLACEHOLDER, id.ToString());
return Client.Get<CallBroadcastStats>(path, queryParams);
}