Add 'submodules/AsyncDisplayKit/' from commit '02bedc12816e251ad71777f9d2578329b6d2bef6'

git-subtree-dir: submodules/AsyncDisplayKit
git-subtree-mainline: d06f423e0e
git-subtree-split: 02bedc1281

submodules/AsyncDisplayKit/examples_extra/SynchronousConcurrency/Sample/AsyncViewController.m

@@ -0,0 +1,38 @@
+//
+//  AsyncViewController.m
+//  Texture
+//
+//  Copyright (c) Facebook, Inc. and its affiliates.  All rights reserved.
+//  Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc.  All rights reserved.
+//  Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
+//
+
+#import "AsyncViewController.h"
+#import "RandomCoreGraphicsNode.h"
+
+@implementation AsyncViewController
+
+- (instancetype)init
+{
+  if (!(self = [super initWithNode:[[RandomCoreGraphicsNode alloc] init]])) {
+    return nil;
+  }
+
+  self.neverShowPlaceholders = YES;
+  self.tabBarItem = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemFavorites tag:0];
+  return self;
+}
+
+- (void)viewWillAppear:(BOOL)animated
+{
+  // FIXME: This is only being called on the first time the UITabBarController shows us.
+  [super viewWillAppear:animated];
+}
+
+- (void)viewDidDisappear:(BOOL)animated
+{
+  [self.node recursivelyClearContents];
+  [super viewDidDisappear:animated];
+}
+
+@end