github.com/gotd/td/tg.InputStorePaymentPurposeBox.Encode (method, view implemented interface methods)

one use

	github.com/gotd/td/tg (current package)
		tl_input_store_payment_purpose_gen.go#L1397: func (b *InputStorePaymentPurposeBox) Encode(buf *bin.Buffer) error {