-class.html">bool</a></span> <span class="parameter-name">isValidKey</span>(<span class="parameter" id="param-potentialKey"><span class="type-annotation">dynamic</span> <span class="parameter-name">potentialKey</span></span><wbr>)}</span><wbr>)</span>
        </dt>
        <dd>
          Create a hash set using the provided <code>equals</code> as equality. <a href="../dart-collection/HashSet/HashSet.html">[...]</a>
          <div class="constructor-modifier features">factory</div>
        </dd>
        <dt 