title: Launch host app from watch app
body: <p>I know that the <code>openParentApplication</code> api in watch kit extension can open the host app in the background but not in the foreground.</p>
  
  <p>I also tried using <code>openUrl()</code> api of <code>NSExtensionContext</code> as below:</p>
  
  <pre><code>NSExtensionContext *ctx = [[NSExtensionContext alloc] init];
  
  NSURL *url = [NSURL URLWithString:@"myScheme://today"];
  [ctx openURL:url completionHandler:^(BOOL success) {
      NSLog(@"fun=%s after completion. success=%d", __func__, success);
  }];
  [ctx completeRequestReturningItems:ctx.inputItems completionHandler:nil];
  </code></pre>
  
  <p>Here too the host app is not launched. Am I missing something? or is it not possible to
  launch the host app from watch kit extension?</p>