protected ByteBuf decrypt(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) {
        return in;
    }
Overridable function used to decrypt the incoming message.

@return ByteBuf the decrypted buffer should be returned.
plc4j/spi/src/main/java/org/apache/plc4x/java/spi/connection/EncryptionHandler.java