{"ast_node_type":"variable","tokens":[{"end":50,"kind":"keyword","start":0,"text":"let"}]}
        let bar_fn_id = ast_id_map.ast_id(bar_fn);
        let foo_fn_id = ast_id_map.ast_id(foo_fn);
        assert_ne!(foo_fn_id.raw.hash_value(), bar_fn_id.raw.hash_value(), "hashes are equal");