trade

type AliPay struct {
}

type Apple struct {
}

type Biller interface {
	// contains filtered or unexported methods
}

type ITrader interface {
	Download()
	Order()
	// contains filtered or unexported methods
}

type Payer interface {
	// contains filtered or unexported methods
}

type Trade struct {
	// contains filtered or unexported fields
}

type WeChat struct {
}