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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 _driver_signing_reg_conversion(cls, val, **kwargs):
        '''
        converts the binary value in the registry for driver signing into the
        correct string representation
        '''
        log.debug('we have %s for the driver signing value', val)
        if val is not None:
            # since this is from secedit, it should be 3,<value>
            _val = val.split(',')
            if len(_val) == 2:
                if _val[1] == '0':
                    return 'Silently Succeed'
                elif _val[1] == '1':
                    return 'Warn but allow installation'
                elif _val[1] == '2':
                    return 'Do not allow installation'
                elif _val[1] == 'Not Defined':
                    return 'Not Defined'
                else:
                    return 'Invalid Value'
            else:
                return 'Not Defined'
        else:
            return 'Not Defined'