Paradox/Autoloader.php
public static function load($className)
    {
        $className = str_replace(__NAMESPACE__, '', $className);
        $className = str_replace("\\", DIRECTORY_SEPARATOR, $className);

        if (file_exists(self::$dirRoot . $className . self::EXTENSION)) {
            require_once self::$dirRoot . $className . self::EXTENSION;
        }
    }
public static function load($className)
    {
        $className = str_replace(__NAMESPACE__, '', $className);
        $className = str_replace("\\", DIRECTORY_SEPARATOR, $className);

        if (file_exists(self::$dirRoot . $className . self::EXTENSION)) {
            require_once self::$dirRoot . $className . self::EXTENSION;
        }
    }
Search for the class's file and require it.
@param string $className The name of the class.