public Task<bool> RequestPublishPermissions(string[] permissions)
{
_isPermissionsLogin = true;
SimpleLogin();
if (_pTask != null)
{
_pTask.TrySetResult(false);
_pTask = null;
}

_pTask = new TaskCompletionSource<bool>();
LoginManager.Instance.SetLoginBehavior(LoginBehavior.NativeWithFallback);
LoginManager.Instance.LogInWithPublishPermissions(Xamarin.Forms.Forms.Context as Activity, permissions: new List<string> { "publish_actions" });

return _pTask.Task;
}