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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def find_raw_devices(vendor=None, product=None, serial_number=None, custom_match=None, **kwargs):
 """Find connected USB RAW devices. See usbutil.find_devices for more info. """

    def is_usbraw(dev):
        if custom_match and not custom_match(dev):
            return False
        return bool(find_interfaces(dev, bInterfaceClass=0xFF,
                                    bInterfaceSubClass=0xFF))

    return find_devices(vendor, product, serial_number, is_usbraw, **kwargs)