src/Common/Helper.php
public static function getGatewayShortName($className)
    {
        if (0 === strpos($className, '\\')) {
            $className = substr($className, 1);
        }

        if (0 === strpos($className, 'Omnipay\\')) {
            return trim(str_replace('\\', '_', substr($className, 8, -7)), '_');
        }

        return '\\'.$className;
    }
public static function getGatewayShortName($className)
    {
        if (0 === strpos($className, '\\')) {
            $className = substr($className, 1);
        }

        if (0 === strpos($className, 'Omnipay\\')) {
            return trim(str_replace('\\', '_', substr($className, 8, -7)), '_');
        }

        return '\\'.$className;
    }
Resolve a gateway class to a short name.

The short name can be used with GatewayFactory as an alias of the gateway class,
to create new instances of a gateway.