public static void LoginSiteManager(XjtuSiteManager m)
{
if (m == null) throw new ArgumentNullException(nameof(m));
var a = m.RequireService<AccountManager>();
AuthenticateCore(a);
Trace.Assert(a.IsLoggedIn);
}
public static void LogoutSiteManager(XjtuSiteManager m)
{
if (m == null) throw new ArgumentNullException(nameof(m));
var a = m.RequireService<AccountManager>();
a.LogoutAsync().Wait();
}