On returning, only the OUTPUT and error containers (if any error has happened) are returned, because the INPUT container is unchanged and need not be returned.
在返回时，仅返回OUTPUT和ERROR容器(如果发生错误的话)，因为INPUT没有改变，所以不需要返回它。
On returning, only the OUTPUT and error containers (if any error has happened) are returned, because the INPUT container is unchanged and need not be returned.
在返回时，仅返回OUTPUT和ERROR容器(如果发生错误的话)，因为INPUT没有改变，所以不需要返回它。
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