/**
  * @return \Swift_Message
  */
 public static function getValid()
 {
     $message = new \Swift_Message();
     $message->setFrom(MailWrapperTestBootstrap::$from);
     $message->addTo(MailWrapperTestBootstrap::$toAddresses[0]);
     $message->addTo(MailWrapperTestBootstrap::$toAddresses[1]);
     $message->addCC(MailWrapperTestBootstrap::$ccAddresses[0]);
     $message->addCC(MailWrapperTestBootstrap::$ccAddresses[1]);
     $message->addBCC(MailWrapperTestBootstrap::$bccAddresses[0]);
     $message->addBCC(MailWrapperTestBootstrap::$bccAddresses[1]);
     $message->addReplyTo(MailWrapperTestBootstrap::$alternate);
     $message->setSubject(MailWrapperTestBootstrap::$subject);
     $message->setBody(MailWrapperTestBootstrap::$contentText);
     $message->addPart(MailWrapperTestBootstrap::$contentHtml, 'text/html');
     return $message;
 }