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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 update(self, values, force=False):
 """ Update this task dictionary :returns: A dictionary mapping field names specified to be updated and a boolean value indicating whether the field was changed. """

        results = {}
        for k, v in six.iteritems(values):
            results[k] = self.__setitem__(k, v, force=force)
        return results