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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 preview_view(self, context):
 """ Preview view - used by StudioContainerWithNestedXBlocksMixin to render nested xblocks in preview context. Default implementation uses author_view if available, otherwise falls back to student_view Child classes can override this method to control their presentation in preview context """

        view_to_render = 'author_view' if hasattr(self, 'author_view') else 'student_view'
        renderer = getattr(self, view_to_render)
        return renderer(context)