// ContextWithBaggage returns a copy of parent with baggage. func ContextWithBaggage(parent context.Context, b Baggage) context.Context { … } // ContextWithoutBaggage returns a copy of parent with no baggage. func ContextWithoutBaggage(parent context.Context) context.Context { … } // FromContext returns the baggage contained in ctx. func FromContext(ctx context.Context) Baggage { … }