github.com/gotd/td/tg.InputStorePaymentPremiumGiveaway.SetCountriesISO2 (method)

one use

	github.com/gotd/td/tg (current package)
		tl_input_store_payment_purpose_gen.go#L1224: func (i *InputStorePaymentPremiumGiveaway) SetCountriesISO2(value []string) {