t completion, return ?&nbsp;IteratorClose(<var>iteratorRecord</var>, <var>status</var>).</li></ol></li></ol></emu-alg></emu-import>
        </emu-clause>
</emu-clause>


<emu-clause id="WeakSet.prototype.addAll">
    <h1><span class="secnum">5</span> WeakSet.prototype.addAll(...<var>items</var>)</h1>
    <emu-import href="./weak-set/prototype-add-all.html"><p>When the <code>addAll</code> method is called, the following steps are taken:</p><emu-alg><ol><li>Let <var>len</var> be the actual number of arguments