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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 connect_default_driver_wrapper(cls, config_files=None):
 """Get default driver wrapper, configure it and connect driver :param config_files: driver wrapper specific config files :returns: default driver wrapper :rtype: toolium.driver_wrapper.DriverWrapper """

        driver_wrapper = cls.get_default_wrapper()
        if not driver_wrapper.driver:
            config_files = DriverWrappersPool.initialize_config_files(config_files)
            driver_wrapper.configure(config_files)
            driver_wrapper.connect()
        return driver_wrapper