View Source ExTDLib.Method.ActivateStoryStealthMode (ExTDLib v0.0.4)

Activates stealth mode for stories, which hides all views of stories from the current user in the last "story_stealth_mode_past_period" seconds and for the next "story_stealth_mode_future_period" seconds; for Telegram Premium users only. Returns object_ptr<Ok>.

More details on telegram's documentation.