ActiveUp.Net.Mail.Mailbox.BeginUnsubscribe C# (CSharp) Метод

        public IAsyncResult BeginUnsubscribe(AsyncCallback callback)
        {
            this._delegateUnsubscribe = this.Unsubscribe;
            return this._delegateUnsubscribe.BeginInvoke(callback, this._delegateUnsubscribe);
        }