{"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"///"}]}
        /// The vtable that was expected at the point in MIR that it was accessed.
        vtable_dyn_type: &'tcx ty::List<ty::PolyExistentialPredicate<'tcx>>,
        expected_dyn_type: &'tcx ty::List<ty::PolyExistentialPredicate<'tcx>>,