private static TransportType find(EventLoopGroup eventLoopGroup) {
        final TransportType found = findOrNull(eventLoopGroup);
        if (found == null) {
            throw unsupportedEventLoopType(eventLoopGroup);
        }
        return found;
    }
Returns whether the specified {@link EventLoopGroup} is supported by any of the currently available
{@link TransportType}s.
core/src/main/java/com/linecorp/armeria/common/util/TransportType.java