public function setListElement($element)
    {
        if (!is_string($element)) {
            throw new \InvalidArgumentException(
                'Breadcrumbs::setListElement() only accepts strings, but '
                . (is_object($element) ? get_class($element) : gettype($element))
                . ' given: ' . print_r($element, true)
            );
        }

        $this->listElement = $element;

        return $this;
    }