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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 index_view(self, request):
 """ Instantiates a class-based view to provide listing functionality for the assigned model. The view class used can be overridden by changing the 'index_view_class' attribute. """

        kwargs = {'model_admin': self}
        view_class = self.index_view_class
        return view_class.as_view(**kwargs)(request)