      <code>null</code> is returned. If the message header is present but has no
         value then the empty string is returned. If the message header is present
         more than once then the values of joined together and separated by a ','
         character.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../javax/ws/rs/container/ContainerRequestContext.html#getHeaders--"><code>getHeaders()</code></a></dd>
</dl>
</li>
</ul>
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