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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 clear_buffer(self):
 """Clear the hub buffer"""

        command_url = self.hub_url + '/1?XB=M=1'
        response = self.post_direct_command(command_url)
        self.logger.info("clear_buffer: %s", response)
        return response