ing <code>cancel</code> on the
 <a href="dart-async/StreamSubscription-class.html">StreamSubscription</a>.</li><li>The <a href="dart-io/FileSystemEntity-class.html">FileSystemEntity</a> being watches, is deleted.</li></ul>
<p>Use <code>events</code> to specify what events to listen for. The constants in
<a href="dart-io/FileSystemEvent-class.html">FileSystemEvent</a> can be or'ed together to mix events. Default is
<a class="deprecated" href="dart-io/FileSystemEvent/ALL-constant.html">FileSystemEvent.ALL</a>