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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 save_model(self, request, obj, form, change):
 """ Clear menu cache when changing menu structure """

        if 'config.menu_structure' in form.changed_data:
            from menus.menu_pool import menu_pool
            menu_pool.clear(all=True)
        return super(BlogConfigAdmin, self).save_model(request, obj, form, change)