code: func ConsensusTypeValue(consensusType string, consensusMetadata []byte) *StandardConfigValue {
  	return &StandardConfigValue{
  		key: ConsensusTypeKey,
  		value: &ab.ConsensusType{
  			Type:     consensusType,
  			Metadata: consensusMetadata,
  		},
  	}
  }
docs: // ConsensusTypeValue returns the config definition for the orderer consensus type.
  // It is a value for the /Channel/Orderer group.