Resources/contao/classes/C4GMembergroupSync.php
protected function compile()
    {
        $this->Template->action = $this->action ?: false;
        $this->Template->output = $this->output ?: '';

        $this->Template->buttons = $this->buttons ?: '';
    }
protected function compile()
    {
        $this->Template->action = $this->action ?: false;
        $this->Template->output = $this->output ?: '';

        $this->Template->buttons = $this->buttons ?: '';
    }
Generate the module