public static EventLoopGroup newEventLoopGroup(int numThreads, String threadNamePrefix) {
        return newEventLoopGroup(numThreads, threadNamePrefix, false);
    }
Returns a newly-created {@link EventLoopGroup}.

@param numThreads the number of event loop threads
@param threadNamePrefix the prefix of thread names
core/src/main/java/com/linecorp/armeria/common/util/EventLoopGroups.java