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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 fetch_top_submissions(self, top):
 """Fetch top submissions by some top value. :param top: One of week, month, year, all :returns: True if any submissions were found. """

        for submission in self.subreddit.top(limit=None, time_filter=top):
            self.submissions[submission.id] = MiniSubmission(submission)