src/Mailer/SMTP.php
public function setOAuth($accessToken)
    {
        $this->oauthToken = $accessToken;
        $this->logger && $this->logger->debug("Set: the auth oauthbearer");
        return $this;
    }
public function setOAuth($accessToken)
    {
        $this->oauthToken = $accessToken;
        $this->logger && $this->logger->debug("Set: the auth oauthbearer");
        return $this;
    }
auth oauthbearer with server
@param string $accessToken
@return $this