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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_context(self, request, page, **kwargs):
 """ Include in context items to be visible on listing page """

        context = super(ListingPagePlugin, self).get_context(
            request, page, **kwargs)
        context['items_to_list'] = page.get_items_to_list(request)
        return context