Reflection Issue with petgraph::graph::DiGraph

[anlumo]

Bevy version

0.15.0

What you did

I'm working on implementing scripting support using bevy_reflect.

What went wrong

There's something weird going on with petgraph::graph::DiGraph:

OpaqueInfo {
    ty: petgraph::graph::DiGraph<bevy_animation::graph::AnimationGraphNode, (), u32>,
    generics: Generics(
        [],
    ),
    docs: None,
}

This type clearly has generic parameters, but the generics field is empty.

Additional information

The reflection is implemented using the macro impl_reflect_opaque!, maybe something there goes wrong.