n class="symbol">: </span><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html"><span class="identifier">String</span></a><span class="symbol">?</span></code>
<p>null if no parent is attached.</p>
<h3>Property</h3>
<p><a name="parentId"></a>
<code>parentId</code> - null if no parent is attached.</p>
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