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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 __clean_rouge_args(self, rouge_args):
 """ Remove enclosing quotation marks, if any. """

        if not rouge_args:
            return
        quot_mark_pattern = re.compile('"(.+)"')
        match = quot_mark_pattern.match(rouge_args)
        if match:
            cleaned_args = match.group(1)
            return cleaned_args
        else:
            return rouge_args