this method sets the HTTP Content-Length
 header.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>len</code> - an integer specifying the length of the content being returned to the client; sets the Content-Length
 header</dd>
</dl>
</li>
</ul>
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<h4>setContentLengthLong</h4>
<pre class="methodSignature">void&nbsp;setContentLengthLong&#8203;(long&nbsp;len)</pre>
<div class="block">Sets th