Method _forwardArrowPressed

src/cdk/menu/menu-item.ts:272–280

* Handles the user pressing the forward arrow key. * @param event The keyboard event.

(event: KeyboardEvent)

   * @param event The keyboard event.
   */
  private _forwardArrowPressed(event: KeyboardEvent) {
    if (!this.hasMenu && this._menuStack.inlineMenuOrientation() === 'horizontal') {
      event.preventDefault();
      this._menuStack.closeAll({
        focusNextOnEmpty: FocusNext.nextItem,
        focusParentTrigger: true,
      });
    }
  }

  /**
   * Subscribe to the mouseenter events and close any sibling menu items if this element is moused