private Selector createSelector(Args args) {
        LogContext logContext = new LogContext();
        ChannelBuilder channelBuilder = new SslChannelBuilder(ConnectionMode.CLIENT, null, false, logContext);
        channelBuilder.configure(args.sslClientConfigs);
        selector = new Selector(5000, new Metrics(), TIME, "MetricGroup", channelBuilder, logContext);
        return selector;
    }
Tests invalid ssl.engine.factory plugin class
clients/src/test/java/org/apache/kafka/common/network/SslTransportLayerTest.java