public static Class<? extends ServerChannel> serverChannelType(EventLoopGroup eventLoopGroup) {
        requireNonNull(eventLoopGroup, "eventLoopGroup");
        return find(eventLoopGroup).serverChannelType();
    }
Returns the {@link ServerChannel} class that is compatible with the specified
{@link EventLoopGroup}.

@throws IllegalStateException if the specified {@link EventLoopGroup} is not supported or
                              its {@link TransportType} is not currently available.
core/src/main/java/com/linecorp/armeria/common/util/TransportType.java