channel name and the raw <code>CloseEvent</code> itself. Note that this will not be invoked on final close of the
 websocket, even when the final close is caused by an error. See also
 <a href="http://tools.ietf.org/html/rfc6455#section-7.4.1">RFC 6455 section 7.4.1</a> and <a href="../../websocket/CloseReason.CloseCodes.html" title="enum in jakarta.websocket"><code>CloseReason.CloseCodes</code></a> API
 for an elaborate list of all close codes.
 </span></div>
<dl>
<dt><span class="paramLabel">Parameters:</