GDNative: How to register array of resources?

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I'm new to GDnative and C++ and am trying to convert one of my C# projects.
I have no idea how to register/export an array of any type in GDnative, and searching online for a solution isn't so easy.
In particular, I'm looking to get an array of PackedScenes into the inspector, and you can do that in C# like so.

[Export((PropertyHint) 13)]
PackedScene[] packedScenes;

I figured out how to register a single PackedScene thanks to this, but getting an array of them doesn't seem very straightforward at all if it's even possible.

Any ideas on how to replicate the behavior I got working in C#?

Godot version 3.3.3
in Engine by (58 points)

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