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          <p>Determines if the response is in the range of 4XX status codes.</p>


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          <code onmouseout="hideTip(event, '94', 94)" onmouseover="showTip(event, '94', 94)">
            status5XX payloads r
          </code>
          <div class="tip" id="94">
            <strong>Signature:</strong> payloads:seq&lt;string&gt; -&gt; r:HttpResponseMessage 