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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 InitFromDataPoints(self, start_stats, complete_stats):
 """Check that this approval applies to the given token. Args: start_stats: A list of lists, each containing two values (a timestamp and the number of clients started at this time). complete_stats: A list of lists, each containing two values (a timestamp and the number of clients completed at this time). Returns: A reference to the current instance to allow method chaining. """

    self.start_points = self._ConvertToResultList(start_stats)
    self.complete_points = self._ConvertToResultList(complete_stats)
    return self