public function destroy()
    {
        $this->registry[$this->section] = array();
        $dcc = $this->getDrupalCommonConnector();

        $dcc->variable_del($this->section);

        $content = $dcc->variable_get($this->section, array());

        if (!empty($content)) {
            throw new \InvalidArgumentException(
                "Section $this->section could not be destroyed from the registry."
            );
        }
    }