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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_unique_fields(self):
 """List field names that are unique_together with `sort_order`."""

        for unique_together in self._meta.unique_together:
            if 'sort_order' in unique_together:
                unique_fields = list(unique_together)
                unique_fields.remove('sort_order')
                return ['%s_id' % f for f in unique_fields]
        return []