github.com/gotd/td/tg.StickerSetCoveredClassArray.Retain (method)

one use

	github.com/gotd/td/tg (current package)
		tl_sticker_set_covered_slices_gen.go#L57: func (s StickerSetCoveredClassArray) Retain(keep func(x StickerSetCoveredClass) bool) StickerSetCoveredClassArray {