public GrpcHealthCheckService build() {
        return new GrpcHealthCheckService(
                serverHealthCheckers.build(),
                grpcHealthCheckers.build(),
                updateListeners.build()
        );
    }
Returns a newly created {@link GrpcHealthCheckService} built from the properties specified so far.
grpc/src/main/java/com/linecorp/armeria/server/grpc/GrpcHealthCheckServiceBuilder.java