Gregwar\RST\Environment::getParent PHP Method

    public function getParent()
    {
        if (!$this->currentFileName || !$this->metas) {
            return null;
        }
        $meta = $this->metas->get($this->currentFileName);
        if (!$meta || !isset($meta['parent'])) {
            return null;
        }
        $parent = $this->metas->get($meta['parent']);
        if (!$parent) {
            return null;
        }
        return $parent;
    }