public function setMailSender(\Parable\Mail\Sender\SenderInterface $mailSender)
    {
        $this->mailSender = $mailSender;
        return $this;
    }
public function setMailSender(\Parable\Mail\Sender\SenderInterface $mailSender)
    {
        $this->mailSender = $mailSender;
        return $this;
    }
public function setMailSender ( \ Parable \ Mail \ Sender \ SenderInterface $ mailSender ) { $ this -> mailSender = $ mailSender ; return $ this ; }
Set the mail sender implementation to use.

@param Sender\SenderInterface $mailSender

@return $this
Set the mail sender implementation to use .