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

one use

	github.com/gotd/td/tg (current package)
		tl_message_extended_media_slices_gen.go#L165: func (s MessageExtendedMediaPreviewArray) Retain(keep func(x MessageExtendedMediaPreview) bool) MessageExtendedMediaPreviewArray {