@Override
	protected void onInit() {
		this.executor.setCorePoolSize(this.executorCorePoolSize);
		this.executor.setMaxPoolSize(this.executorMaxPoolSize);
		this.executor.setQueueCapacity(this.executorQueueSize);
		this.executor.setKeepAliveSeconds(this.executorKeepAliveSeconds);
		this.executor.setThreadNamePrefix("xd.localbus-");
		this.executor.initialize();
	}
Set the {@link ThreadPoolTaskExecutor}} keep alive seconds.
The executor is used for PubSub operations.
@param executorKeepAliveSeconds the keep alive seconds.
spring-xd-messagebus-local/src/main/java/org/springframework/xd/dirt/integration/bus/local/LocalMessageBus.java