{"ast_node_type":"variable","tokens":[{"end":97,"kind":"keyword","start":0,"text":"let"}]}
        let instance_name = with_no_trimmed_paths!(tcx.def_path_str(self.instance.def.def_id()));
    pub fn display(self, tcx: TyCtxt<'tcx>) -> String {
        if let Some(promoted) = self.promoted {