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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_gist(self):
 """Retrieve the gist at this version. :returns: :class:`Gist <github3.gists.gist.Gist>` """

        from .gist import Gist
        json = self._json(self._get(self._api), 200)
        return Gist(json, self)