_setupOpenCloseListeners() {
      /**
       * @param {{ stopPropagation: () => void; }} ev
       */
      this.__closeEventInContentNodeHandler = ev => {
        ev.stopPropagation();
        /** @type {OverlayController} */ (this._overlayCtrl).hide();
      };
      if (this._overlayContentNode) {
        this._overlayContentNode.addEventListener(
          'close-overlay',
          this.__closeEventInContentNodeHandler,
        );
      }
    }
@overridable
@desc use this method to setup your open and close event listeners
For example, set a click event listener on _overlayInvokerNode to set opened to true
@protected