class="qm-api-javascript-prototype-name">hx.Set</span></span><span class="qm-api-header-tags"><span class="qm-api-tag qm-api-tag-deprecated">deprecated</span></span></div></div></div></div><div class="qm-api-collapsible-content"><div class="qm-api-item-content"><div class="qm-api-notice qm-api-notice-deprecated"><div class="qm-api-notice-header">Deprecated</div><div class="qm-api-notice-body"><div class="qm-html-paragraph">Deprecated in favour of native ES6 Set </div></div></div><div class="qm-api-group qm-