getXPath example

            if (isset($rule['nodeName']) && is_array($rule['nodeName']) && !in_array($ele->localName, $rule['nodeName'], true)) {
                continue;
            }
            if (isset($rule['attrName']) && !is_array($rule['attrName']) && $rule['attrName'] !== $attr->localName) {
                continue;
            }
            if (isset($rule['attrName']) && is_array($rule['attrName']) && !in_array($attr->localName, $rule['attrName'], true)) {
                continue;
            }
            if (isset($rule['xpath'])) {
                $xp = $this->getXPath($attr);
                if (isset($rule['prefixes'])) {
                    foreach ($rule['prefixes'] as $nsPrefix => $ns) {
                        $xp->registerNamespace($nsPrefix, $ns);
                    }
                }
                if (!$xp->evaluate($rule['xpath'], $attr)) {
                    continue;
                }
            }

            return true;
        }