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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 add_tags(self, tags):
 """ Add tags to the comments """

        if not isinstance(tags, list):
            tags = [tags]
        self._bugsy.request('bug/comment/%s/tags' % self._comment['id'],
                            method='PUT', json={"add": tags})