public void Start()
{
var api = new Api();
api.GetPost(1)
.SubscribeOn(NewThreadScheduler.Default)
.Timeout(TimeSpan.FromMilliseconds(10000))
.Subscribe((url) => {
_view.ExecuteOnMainThread(() => _view.ShowUrl(url));
}, (error) => {
_view.ExecuteOnMainThread(() => _view.ShowError());
}).DisposeWith(_disposables);
}