UpdatePeerWallpaper

---types---
updatePeerWallpaper#ae3f101d wallpaper_overridden:flags.1?true peer:Peer wallpaper:flags.0?WallPaper = Update

In Rust this constructor is a variant of the enums::Update enum.
Match on it with: if let enums::Update::UpdatePeerWallpaper(v) = result { ... }