JFIFxxC      C  " }!1AQa"q2#BR$3br %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz w!1AQaq"2B #3Rbriam ?: new Iam($httpHandler); $email = $this->getClientName($httpHandler); if (is_null($accessToken)) { $previousToken = $this->getLastReceivedToken(); $accessToken = $previousToken ? $previousToken['access_token'] : $this->fetchAuthToken($httpHandler)['access_token']; } return $signer->signBlob($email, $accessToken, $stringToSign); } }