public static GrpcHealthCheckService of(ListenableHealthChecker... healthCheckers) {
        return builder().checkers(healthCheckers).build();
    }
Returns a newly created {@link GrpcHealthCheckService}
with the specified {@link ListenableHealthChecker}s.
grpc/src/main/java/com/linecorp/armeria/server/grpc/GrpcHealthCheckService.java