protected function hasParent(string $file = null): bool
    {
        if (isset($file)) {
            return in_array($file, $this->parents, true);
        }
        return !empty($this->parents);
    }
protected function hasParent(string $file = null): bool
    {
        if (isset($file)) {
            return in_array($file, $this->parents, true);
        }
        return !empty($this->parents);
    }
protected function hasParent ( string $ file = null ) : bool { if ( isset ( $ file ) ) { return in_array ( $ file , $ this -> parents , true ) ; } return ! empty ( $ this -> parents ) ; }
Has a parent?

@since 150424 Initial release.

@param string|null $file Template file.

@return bool True if child has a parent.
Has a parent?