">Expression</a>, <a href="../../../../io/delta/standalone/expressions/Predicate.html" title="interface in io.delta.standalone.expressions">Predicate</a></dd>
</dl>
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<pre>public final class <span class="typeNameLabel">IsNull</span>
extends <a href="../../../../io/delta/standalone/expressions/UnaryExpression.html" title="class in io.delta.standalone.expressions">UnaryExpression</a>
implements <a href="../../../../io/delta/standalone/expressions/Predicate.html" title="interface in io.delta.standalone