code: func UnmarshalConfigUpdate(data []byte) (*cb.ConfigUpdate, error) {
  	configUpdate := &cb.ConfigUpdate{}
  	err := proto.Unmarshal(data, configUpdate)
  	if err != nil {
  		return nil, err
  	}
  	return configUpdate, nil
  }
docs: // UnmarshalConfigUpdate attempts to unmarshal bytes to a *cb.ConfigUpdate