I got curious on the off-heap mechanism used by the openHFT project and am looking for the class file below (couldn't find anywhere in github) as defined by the source code here:

Class<? extends Memory> java9MemoryClass = Class
                    .forName("software.chronicle.enterprise.core.Java9Memory")
                    .asSubclass(Memory.class);

From the github repository: https://github.com/OpenHFT/Chronicle-Core/blob/master/src/main/java/net/openhft/chronicle/core/OS.java

My question is: Is this class open source? If yes, how does it work? Thanks.