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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_bookmark(self, bookmark_id):
 """ Get a single bookmark represented by `bookmark_id`. The requested bookmark must belong to the current user. :param bookmark_id: ID of the bookmark to retrieve. """

        url = self._generate_url('bookmarks/{0}'.format(bookmark_id))
        return self.get(url)