code: public GrpcServer build() {
      addService(new GrpcService(new ServiceVersionClientServiceHandler(mServices))
          .disableAuthentication());
      return new GrpcServer(mNettyServerBuilder.build(),
          mConfiguration.getMs(PropertyKey.MASTER_GRPC_SERVER_SHUTDOWN_TIMEOUT));
    }
docs: Build the server.
  It attaches required services and interceptors for authentication.
  
  @return the built {@link GrpcServer}