@Override
  public void doneReadingDirectAck(ByteBuffer unwrappedBuffer) {
    // nothing needs to be done - the next direct-ack message will be
    // read into the same buffer and compaction will be done during
    // read-operations
  }
This will throw an SSLHandshakeException if the handshake doesn't terminate in a FINISHED
state. It may throw other IOExceptions caused by I/O operations
geode-core/src/main/java/org/apache/geode/internal/net/NioSslEngine.java