returned in case there is no argument or the argument is not a valid
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We, the undersigned organizations representing civil society, nonprofit institutions, and technology companies, write to express our strong opposition to Google’s announced policy requiring all Android app developers to register centrally with Google themselves in order to distribute applications outside of the Google Play Store, set to take effect worldwide in the coming months.，更多细节参见PDF资料
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async def set_state(new_state):