protected function setAuthHeader() { if ($this->username === NULL || $this->password === NULL || $this->merchantNumber === NULL) { return; } else { $this->authHeader = base64_encode($this->username . "|" . $this->merchantNumber . ":" . $this->password); } if ($this->userAgent != NULL) { RequestSender::setUserAgent($this->userAgent); } RequestSender::setTimeout($this->timeout); }