private static ManagedChannel newChannel(String host, int port, NioEventLoopGroup eventExecutors) {
        NettyChannelBuilder builder = NettyChannelBuilder.forAddress(host, port);
        BuilderUtils.usePlainText(builder);

        builder.eventLoopGroup(eventExecutors);
        builder.channelType(NioSocketChannel.class);

        builder.intercept(MetadataUtils.newCaptureMetadataInterceptor(new AtomicReference<Metadata>(), new AtomicReference<Metadata>()));
        return builder.build();
    }
Construct client connecting to HelloWorld server at {@code host:port}.
agent-module/plugins-it/google-grpc-it/google-grpc-1-42-it/src/test/java/com/navercorp/pinpoint/it/plugin/grpc/HelloWorldSimpleClient.java