public function checkPageSubjectInUrl() {
        if ($this->checkPageSubjectDefined()) {

            $url_segment             = $this->owner->URLSegment;
            $pagesubject_url_segment = $this->owner->generateURLSegment($this->owner->SEOPageSubject);

            if (preg_match('/' . preg_quote($pagesubject_url_segment, '/') . '/i', $url_segment)) {
                return true;
            }
            else {
                return false;
            }
        }
        return false;

    }