github.com/gotd/td/tg.InputStorePaymentPremiumGiveaway.construct (method, view implemented interface methods)

one use

	github.com/gotd/td/tg (current package)
		tl_input_store_payment_purpose_gen.go#L819: func (i InputStorePaymentPremiumGiveaway) construct() InputStorePaymentPurposeClass { return &i }