  &nbsp;: bool    </span>
</dt>
<dd>Checks if a property is nullable</dd>

            <dt class="phpdocumentor-table-of-contents__entry -method -public">
    <a href="classes/LINE-Webhook-Model-RoomSourceAllOf.html#method_isNullableSetToNull">isNullableSetToNull()</a>
    <span>
                                &nbsp;: bool    </span>
</dt>
<dd>Checks if a nullable property is set to null.</dd>

            <dt class="phpdocumentor-table-of-contents__entry -method -public">
    <a href="classes/LINE-Webhook