{"ast_node_type":"struct","tokens":[{"end":58,"kind":"keyword","start":0,"text":"///"}]}
    /// A struct definition, e.g., `struct Foo<A> {x: A}`.
    Enum(Ident, &'hir Generics<'hir>, EnumDef<'hir>),
    Struct(Ident, &'hir Generics<'hir>, VariantData<'hir>),