{"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"//"}]}
            // requires providing generic arguments for `[T, M, N]`.
            // (as it has no args), but instantiating the early binder on `typeof(N)`
            (res, Some(ty::GenericArgs::identity_for_item(tcx, tcx.parent(def))))