public function beforeTraverse(array $nodes)
    {
        if (empty($nodes)) {
            return $nodes;
        }

        $last = \end($nodes);

        if ($last instanceof Namespace_) {
            $kind = $last->getAttribute('kind');

            // Treat all namespace statements pre-PHP-Parser v3.1.2 as "open",
            // even though we really have no way of knowing.
            if ($kind === null || $kind === Namespace_::KIND_SEMICOLON) {
                // Save the current namespace for open namespaces
                $this->setNamespace($last->name);
            } else {
                // Clear the current namespace after a braced namespace
                $this->setNamespace(null);
            }

            return $nodes;
        }

        return $this->namespace ? [new Namespace_($this->namespace, $nodes)] : $nodes;
    }