a>&nbsp;xml)</pre>
<div class="block">Processes an "update" (add, commit or optimize) and
 returns the response as a String.
 
 This method does NOT commit after the request.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>xml</code> - The XML of the update</dd>
<dt><span class="strong">Returns:</span></dt><dd>The XML response to the update</dd></dl>
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<h4>validateUpdate</h