func (u StellarMessage) MustEnvelope() ScpEnvelope {
	val, ok := u.GetEnvelope()

	if !ok {
		panic("arm Envelope is not set")
	}

	return val
}
func (u StellarMessage) MustEnvelope() ScpEnvelope {
	val, ok := u.GetEnvelope()

	if !ok {
		panic("arm Envelope is not set")
	}

	return val
}
// MustEnvelope retrieves the Envelope value from the union,
// panicing if the value is not set.