code: public static ServerBootstrap updateConfiguration(ServerBootstrap b,
  			String name,
  			BiConsumer<ConnectionObserver, ? super Channel> c) {
  		Objects.requireNonNull(b, "bootstrap");
  		Objects.requireNonNull(name, "name");
  		Objects.requireNonNull(c, "configuration");
  		b.childHandler(updateConfiguration(b.config().childHandler(), name, c));
  		return b;
  	}
docs: Add the configuration consumer to this {@link ServerBootstrap} given a unique
  configuration name. Configuration will be run on child channel init.
  
  @param b a server bootstrap
  @param name a configuration name
  @param c a configuration consumer
  @return the mutated bootstrap