e cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">guestsHaveToKnock</td><td class="detailHeaderType">property</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>guestsHaveToKnock:Boolean</code>&nbsp;&nbsp;[read-write]<p>
   Whether or not guests must knock and get permission before entering a room. 
   
   </p><p>This property can be used as the source for data binding.</p>
<span class="label">Implementation</span>
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<code>&n