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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 _feature_returner(self, **kwargs):
 """ Returns a feature, adding additional database-specific defaults """

        kwargs.setdefault('dialect', self.dialect)
        kwargs.setdefault('keep_order', self.keep_order)
        kwargs.setdefault('sort_attribute_values', self.sort_attribute_values)
        return Feature(**kwargs)