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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 first(self):
 """Returns the first item from the query, or None if there are no results"""

        if self._results_cache:
            return self._results_cache[0]

        query = PaginatedResponse(func=self._func, lwrap_type=self._lwrap_type, **self._kwargs)
        try:
            return next(query)
        except StopIteration:
            return None