Parallel iteration across NativeHashMap / NativeMultiHashMap?

Is there a job that would allow me to go through a NativeHashMap, NativeHashSet, or NativeMultiHashMap? I guess the HashSet could be done by simply converting the thing to an array, but I have no idea about the other.

I found the following
https://docs.unity3d.com/Packages/c...tions.JobNativeMultiHashMapVisitKeyValue.html
but it doesn't seem to work when I try it, visual studio can't find the reference. I'm using the Jobs and Burst package in an URP project.

EDIT:
Found https://forum.unity.com/threads/rep...ivemultihashmapmergedsharedkeyindices.882019/
which mentions it's been deprecated. Please delete this thread.