public void configureBufferSizes(Integer netReadBufSize, Integer netWriteBufSize, Integer appBufSize) {
            this.netReadBufSizeOverride = netReadBufSize;
            this.netWriteBufSizeOverride = netWriteBufSize;
            this.appBufSizeOverride = appBufSize;
        }
Tests invalid ssl.engine.factory plugin class
clients/src/test/java/org/apache/kafka/common/network/SslTransportLayerTest.java