public UsersResult getUsers(TimeUnit timeUnit, String start, int duration)
{
String url = REPORT_HOST_NAME + REPORT_USER_PATH
+ "?time_unit=" + timeUnit.ToString()
+ "&start=" + start + "&duration=" + duration;
String auth = Base64.getBase64Encode(this.appKey + ":" + this.masterSecret);
ResponseWrapper response = this.sendGet(url, auth, null);
return(UsersResult.fromResponse(response));
}