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

one use

	github.com/gotd/td/tg (current package)
		tl_input_wall_paper_slices_gen.go#L288: func (s InputWallPaperSlugArray) Retain(keep func(x InputWallPaperSlug) bool) InputWallPaperSlugArray {