Any FSKit sample available from Apple?

Is there an FSKit sample available? I have tried sample code from https://github.com/KhaosT/FSKitSample on macOS Tahoe 26. I am able to compile the code, with signed/unsigned code, the mount always hangs on Apple Silicon macOS Tahoe 26.

Here is the mount script: mkfile -n 100m dummy // create a dummy file hdiutil attach -imagekey diskimage-class=CRawDiskImage -nomount dummy // mount the newly created file as a raw block device mkdir /tmp/TestVol mount -F -t MyFS diskX /tmp/TestVol

Any idea why the mount hangs.