Transformer/MailerTransformer.php
protected function transformTemplate(Template $template)
    {
        return array(
            'template' => $template->getTemplate(),
            'engine' => $template->getEngine(),
            'vars' => $this->transform($template->getVars()),
            'streamable' => $this->transformBoolean($template->isStreamable()),
        );
    }
protected function transformTemplate(Template $template)
    {
        return array(
            'template' => $template->getTemplate(),
            'engine' => $template->getEngine(),
            'vars' => $this->transform($template->getVars()),
            'streamable' => $this->transformBoolean($template->isStreamable()),
        );
    }
Transform Template Symfony annotation into array equivalent

@param Template $template
@return array