get overflowDomRef() {
      return this.shadowRoot.querySelector(`*[data-ui5-stable="overflow"]`);
    }
Returns the <code>overflow</code> icon DOM ref.
@type {HTMLElement}
@name sap.ui.webc.fiori.ShellBar.prototype.overflowDomRef
@public
@readonly
@since 1.0.0-rc.16