public Bus [] getBusses ()
    throws IOException
    {
	Bus	value [] = host.getBusses ();
	Bus	retval [];

	if (value.length == 0)
	    return value;

	retval = new Bus [value.length];
	for (int i = 0; i < retval.length; i++)
	    retval [i] = get (value [i]);
	return retval;
    }