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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 set_default_region(self, region):
 """ This sets the default region for detecting license plates. For example, setting region to "md" for Maryland or "fr" for France. :param region: A unicode/ascii string (Python 2/3) or bytes array (Python 3) :return: None """

        region = _convert_to_charp(region)
        self._set_default_region_func(self.alpr_pointer, region)