getFocusDomRef() {
      const domRef = this.getDomRef();
      if (domRef) {
        const focusRef = domRef.querySelector("[data-sap-focus-ref]");
        return focusRef || domRef;
      }
    }
Returns the DOM Element marked with "data-sap-focus-ref" inside the template.
This is the element that will receive the focus by default.
@public