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

one use

	github.com/gotd/td/tg (current package)
		tl_media_area_slices_gen.go#L627: func (s InputMediaAreaChannelPostArray) Retain(keep func(x InputMediaAreaChannelPost) bool) InputMediaAreaChannelPostArray {