ss="summaryTableDescription">
   Gives a specific user a specific role level for this entire collection or optionally 
   a specified node within it.</div>
</td><td class="summaryTableOwnerCol"><a href="../sharedModel/CollectionNode.html">CollectionNode</a></td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#subscribe()">subscribe</a>():voi