Xamarin.iOS UITableView Заголовок раздела с раскрытием стрелки вверх / вниз

            Thread CrearEventoHilo = new Thread(){
                public void run(){
                    //do something that retrun "Calling this from your main thread can lead to deadlock"
                }
            };
            CrearEventoHilo.start();

CrearEventoHilo.interrupt ();

public class Foo {
    MyThread mTh;
    void cantBeBothered() {
        mTh = new MyThread( /*...*/ );
        mTh.run();
        mTh.start();
    }
    void imFinishedNowWaitingForThread() {
        mTh.join();
    }
    void imOutKillingOffPendingThread()  {
        mTh.interrupt();
    }
//  .....
    private class MyThread extends Thread {
//      ...;
        MyThread( /*...*/) {
//          this... = ...;
        }
        public void run() {
            doSomething( /*this...*/ );
        }
    }
}