code: public function pathAsString(ItemInterface $menu, $separator = ' > ')
      {
          if (null === $this->menuManipulator) {
              throw new \BadMethodCallException('The menu manipulator must be set to get the breadcrumbs array');
          }
  
          return $this->menuManipulator->getPathAsString($menu, $separator);
      }
docs: A string representation of this menu item
  
  e.g. Top Level > Second Level > This menu
  
  @param ItemInterface $item
  @param string        $separator
  
  @return string