public function processNode(Parser $parser, $variable, $data, array $options)
    {
        $this->processAction($parser, $variable, $data, $options);

        return null;
    }
public function processNode(Parser $parser, $variable, $data, array $options)
    {
        $this->processAction($parser, $variable, $data, $options);

        return null;
    }
public function processNode ( Parser $ parser , $ variable , $ data , array $ options ) { $ this -> processAction ( $ parser , $ variable , $ data , $ options ) ; return null ; }
This can be overloaded to write a directive that just create one node for the
document, which is common

The arguments are the same that process
This can be overloaded to write a directive that just create one node for the document which is common