public function __construct($accessKey = null, $secretKey = null, $region = null)
{
parent::__construct($accessKey, $secretKey, $region);
$this->_region = $region;
switch ($region) {
case 'us-east-1':
// default endpoint is correct for this region
break;
default:
$this->setEndpoint(sprintf('http://s3-%s.amazonaws.com', $region));
}
}
