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

one use

	github.com/gotd/td/tg (current package)
		tl_input_wall_paper_slices_gen.go#L178: func (s InputWallPaperArray) Retain(keep func(x InputWallPaper) bool) InputWallPaperArray {