ass="section return"><dt>Returns</dt><dd>the MQTT V5 type code of the input property. -1 if the code was not found. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a2850f38d4ff89af52999fdc42cdff6fa">&#9670;&#160;</a></span>MQTTProperties_len()</h2>

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          <td class="memname">int MQTTProperties_len 