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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 get_sanitize_files(self):
 """ Return list of all sanitize files provided by the user on the command line. N.B.: We only support one sanitize file at the moment, but this is likely to change in the future """

        if self.parent.config.option.sanitize_with is not None:
            return [self.parent.config.option.sanitize_with]
        else:
            return []