code: public <T> GrpcServerBuilder withChildOption(ChannelOption<T> option, T value) {
      mNettyServerBuilder = mNettyServerBuilder.withChildOption(option, value);
      return this;
    }
docs: Sets a netty channel option.
  
  @param <T> channel option type
  @param option the option to be set
  @param value the new value
  @return an updated instance of this {@link GrpcServerBuilder}