@Override
    public void onApplicationEvent(@NotNull final ContextRefreshedEvent event) {
        startGrpcServer();
    }
@Test
    public void testOnApplicationEvent() {
        GrpcServerBuilder testGrpcServerBuilder = () -> ServerBuilder.forPort(8088);

        GrpcServerRunner testGrpcServerRunner = new GrpcServerRunner(testGrpcServerBuilder, testGrpcClientEventListener);

        testGrpcServerRunner.onApplicationEvent(testEvent);
    }