private function constructUserAgentHeader()
 {
     $this->userAgent = $this->quoteApplicationName($this->config->getApplicationName()) . '/' . $this->quoteApplicationVersion($this->config->getApplicationVersion());
     $this->userAgent .= ' (';
     $this->userAgent .= 'Language=PHP/' . phpversion();
     $this->userAgent .= '; ';
     $this->userAgent .= 'Platform=' . php_uname('s') . '/' . php_uname('m') . '/' . php_uname('r');
     $this->userAgent .= '; ';
     $this->userAgent .= 'MWSClientVersion=' . self::MWS_CLIENT_VERSION;
     $this->userAgent .= ')';
 }
 /**
  *
  * @return string the name of the application
  */
 public function getApplicationName()
 {
     return $this->config->getApplicationName();
 }