def set_prewarp(self, prewarp):
        """
        Updates the prewarp configuration used to skew images in OpenALPR before
        processing.

        :param prewarp: A unicode/ascii string (Python 2/3) or bytes array (Python 3)
        :return: None
        """
        prewarp = _convert_to_charp(prewarp)
        self._set_prewarp_func(self.alpr_pointer, prewarp)