code: func (n *Network) WriteOrdererConfig(o *Orderer, config *fabricconfig.Orderer) {
  	ordererBytes, err := yaml.Marshal(config)
  	Expect(err).NotTo(HaveOccurred())
  
  	err = ioutil.WriteFile(n.OrdererConfigPath(o), ordererBytes, 0644)
  	Expect(err).NotTo(HaveOccurred())
  }
docs: // WriteOrdererConfig serializes the provided configuration as the specified
  // orderer's orderer.yaml document.