public function setBody($body, $contentType = null);
/** * @param \Swift_Mime_MimeEntity $message * * @throws \TijsVerkoyen\CssToInlineStyles\Exception */ private function convert(\Swift_Mime_MimeEntity $message) { if ($message->getContentType() !== 'text/plain') { $this->inliner->setCSS(''); $this->inliner->setHTML($message->getBody()); $message->setBody($this->inliner->convert()); } }