{"ast_node_type":"variable","tokens":[{"end":79,"kind":"keyword","start":0,"text":"let"}]}
            let adjustment = Adjustment::Deref { source: DerefSource::MutPtr };
        ty::InstanceKind::VTableShim(def_id) => {
            build_call_shim(tcx, instance, Some(adjustment), CallKind::Direct(def_id))