public VirtualHostBuilder blockingTaskExecutor(ScheduledExecutorService blockingTaskExecutor,
                                                   boolean shutdownOnStop) {
        requireNonNull(blockingTaskExecutor, "blockingTaskExecutor");
        return blockingTaskExecutor(BlockingTaskExecutor.of(blockingTaskExecutor), shutdownOnStop);
    }
Sets the {@link ScheduledExecutorService} dedicated to the execution of blocking tasks or invocations.
If not set, {@linkplain CommonPools#blockingTaskExecutor() the common pool} is used.

@param shutdownOnStop whether to shut down the {@link ScheduledExecutorService} when the
                      {@link Server} stops
core/src/main/java/com/linecorp/armeria/server/VirtualHostBuilder.java