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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 flush_stdout(self):
 """ Empties the standard out redirect buffer and renders the contents to the body as a preformatted text box. """

        try:
            contents = self.stdout_interceptor.flush_all()
        except Exception:
            return

        if len(contents) > 0:
            self.body.append(render_texts.preformatted_text(contents))
            self._last_update_time = time.time()

        return contents