{"ast_node_type":"variable","tokens":[{"end":62,"kind":"keyword","start":0,"text":"let"}]}
                let item_def_id = tcx.hir_get_parent_item(id);
                // In the above code we want the anon const to have predicates in its param env for `'b: 'a`
                // In the above code example we would be calling `inferred_outlives_of(Foo)` here