system/Config/BaseService.php
public static function autoloader(bool $getShared = true)
	{
		if ($getShared)
		{
			if (empty(static::$instances['autoloader']))
			{
				static::$instances['autoloader'] = new Autoloader();
			}

			return static::$instances['autoloader'];
		}

		return new Autoloader();
	}
public static function autoloader(bool $getShared = true)
	{
		if ($getShared)
		{
			if (empty(static::$instances['autoloader']))
			{
				static::$instances['autoloader'] = new Autoloader();
			}

			return static::$instances['autoloader'];
		}

		return new Autoloader();
	}
The Autoloader class is the central class that handles our
spl_autoload_register method, and helper methods.

@param boolean $getShared

@return \CodeIgniter\Autoloader\Autoloader