{"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":"//"}]}
        // not a `TyKind::Infer` so there is no risk of transmuting a `()` to `AmbigArg`.
        // the same across different ZST type arguments. We also asserted that the `self` is
        let ptr = self as *const Ty<'hir> as *const Ty<'hir, AmbigArg>;