_defineOverlayConfig() {
    if (window.innerWidth >= 600) {
      this.hasArrow = true;
      return {
        ...withModalDialogConfig(),
        hidesOnOutsideClick: true,
        visibilityTriggerFunction: undefined,
        ...super._defineOverlayConfig(),
        popperConfig: {
          ...super._defineOverlayConfig().popperConfig,
          placement: 'bottom',
        },
      };
    }
    this.hasArrow = false;
    return withBottomSheetConfig();
  }
@override Configures OverlayMixin
@desc overrides default configuration options for this component
@returns {Object}