static function _load_default_gateways()
{
$path = STTraveler::dir('gateways');
$results = scandir($path);
foreach ($results as $result) {
if ($result === '.' or $result === '..') {
continue;
}
if (is_dir($path . '/' . $result)) {
$file = $path . '/' . $result . '/' . $result . '.php';
if (file_exists($file)) {
include_once $file;
}
}
}
}
