protected function removeExistingUrlRewrite(array $urlRewrite)
    {

        // load request path
        $requestPath = $urlRewrite[MemberNames::REQUEST_PATH];

        // query whether or not the URL rewrite exists and remove it, if available
        if (isset($this->existingUrlRewrites[$requestPath])) {
            unset($this->existingUrlRewrites[$requestPath]);
        }
    }