public static function init($access_key, $secret_key)
{
self::$__access_key = $access_key;
self::$__secret_key = $secret_key;
}
/**
* Set AWS access key and secret key
*
* @param string $accessKey Access key
* @param string $secretKey Secret key
* @return void
*/
public static function setAuth($accessKey, $secretKey)
{
self::$__access_key = $accessKey;
self::$__secret_key = $secretKey;
}