I’m attempting to store a arrays of values inside a NativeHashMap.

However, I am being told that TValue must be a non-nullable type. How could I best go about storing the array?

Important points are:

• All stored arrays are the same size.
• The order of the contents of the array is essential.

I previously found advice online to do the following:
public NativeHashMap<int3, NativeArray<int>> foo = new NativeHashMap<int3, NativeArray<int>>();

However this either never worked or no longer works.