PDepend\Engine::countNamespaces PHP Method

    public function countNamespaces()
    {
        if ($this->namespaces === null) {
            $msg = 'countNamespaces() doesn\'t work before the source was analyzed.';
            throw new \RuntimeException($msg);
        }
        $count = 0;
        foreach ($this->namespaces as $namespace) {
            if ($namespace->isUserDefined()) {
                ++$count;
            }
        }
        return $count;
    }