code: func (n *Network) ReadOrdererConfig(o *Orderer) *fabricconfig.Orderer {
  	var orderer fabricconfig.Orderer
  	ordererBytes, err := ioutil.ReadFile(n.OrdererConfigPath(o))
  	Expect(err).NotTo(HaveOccurred())
  
  	err = yaml.Unmarshal(ordererBytes, &orderer)
  	Expect(err).NotTo(HaveOccurred())
  
  	return &orderer
  }
docs: // ReadOrdererConfig  unmarshals an orderer's orderer.yaml and returns an
  // object approximating its contents.