def METHOD_NAME(*method_args):
    self, args = method_args
    if start_trading and not LiveEventArgsValidator(
            self._strategy.log.error).are_start_trading_event_args_valid(args):
        return
    if not start_trading and not LiveEventArgsValidator(
            self._strategy.log.error).are_stop_trading_event_args_valid(args):
        return
    func(self, args)