// MustFromContext returns an Instance from the given context, or panics if not present.
MustFromContext returns an Instance from the given context, or panics if not present.
// MustFromContext returns an Instance from the given context or panics if not present .
func MustFromContext(ctx context.Context) *Instance {
	v := FromContext(ctx)
	if v == nil {
		panic("V is not in context.")
	}
	return v
}
func MustFromContext ( ctx context . Context ) * Instance { v := FromContext ( ctx ) if v == nil { panic ( " " ) } return v }
MustFromContext returns an Instance from the given context, or panics if not present.
MustFromContext returns an Instance from the given context or panics if not present .