public async Task<TwitterApiStatus> GetInfoApi()
{
if (Twitter.AccountState != MyCommon.ACCOUNT_STATE.Valid) return null;
if (MyCommon._endingFlag) return null;
var limits = await this.Api.ApplicationRateLimitStatus()
.ConfigureAwait(false);
MyCommon.TwitterApiInfo.UpdateFromJson(limits);
return MyCommon.TwitterApiInfo;
}