private async Task InviteToGroup(PersonModel person)
{
person.IsBusy = true;
var res = await ApiClient.AddPersonToGroup(person.UserId, Group.Id);
if (res.IsOk)
{
Acr.UserDialogs.UserDialogs.Instance.Toast("Invited");
}
else
{
Acr.UserDialogs.UserDialogs.Instance.Toast("Problem");
}
person.IsBusy = false;
}