public static EventLoopGroup newEventLoopGroup(int numThreads, boolean useDaemonThreads) {
        return newEventLoopGroup(numThreads, "armeria-eventloop", useDaemonThreads);
    }
Returns a newly-created {@link EventLoopGroup}.

@param numThreads the number of event loop threads
@param useDaemonThreads whether to create daemon threads or not
core/src/main/java/com/linecorp/armeria/common/util/EventLoopGroups.java