/// <summary>
/// 粉丝增减数据：一天可能有多条，根据user_source分组
/// </summary>
/// <param name="token"></param>
/// <param name="start"></param>
/// <param name="end"></param>
/// <returns></returns>
public async Task <AnalysisResultJson <UserSummaryItem> > GetUserSummaryAsync(string token, string start, string end)
{
return(await AnalysisApi.GetUserSummaryAsync(token, start, end));
}