{"ast_node_type":"variable","tokens":[{"end":59,"kind":"keyword","start":0,"text":"let"}]}
            let gat_item = tcx.associated_item(gat_def_id);
            let gat_def_id = gat_item.def_id.expect_local();
            // If this item is not an assoc ty, or has no args, then it's not a GAT