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