Missing files in SDK

Hello, I’m trying to follow the advanced VST3 tutorial provided.
When I look in my SDK folder, there is no again_sampleaccurate folder as mentioned, nor are the files
public.sdk/source/vst/utility/processdataslicer.h
public.sdk/source/vst/utility/sampleaccurate.h
public.sdk/source/vst/utility/rttransfer.h
anywhere to be found. What am I missing here? It seems I’ll just have to come up with my own ideas. In general the docs seem to be incorrect, misleading, or out of date. Any 3rd party tutorial on the topic would be useful, thanks.

See vst3_public_sdk/source/vst/utility at master · steinbergmedia/vst3_public_sdk · GitHub
Make sure to have an up-to-date version of the SDK.

I guess that was obvious. In my mind, I’d downloaded it “recently”, but it turn out that was 9 months ago and it seems that everything was updated about 6 months ago. Feel free to delete this topic.