How to Convert Geometry Groups to USD Geometry Subsets?

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In /obj context, I have a geo node that loads a model that has groups for applying materials to various parts.
I want to import this geo node into the /stage LOPs context and convert the groups into geometry subsets.
i.e. to apply LOPS materials to the subsets.

The closest thing I could find is this:
https://www.sidefx.com/docs/houdini/nodes/lop/geometrysubsetvop.html [www.sidefx.com]

However, I don't know how to use it to convert Houdini geometry groups to USD geometry subsets.

Does anyone have an example I can study?

Thanks
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in the sopimport lop in the subset groups parameter you can list the primitive groups that will be converted to subsets.
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Very helpful. Thanks!
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