{"ast_node_type":"variable","tokens":[{"end":44,"kind":"keyword","start":0,"text":"let"}]}
    let crate_def_map = module.def_map(&db);
    let module = db.module_for_file(pos.file_id.file_id(&db));
    visit_module(&db, crate_def_map, module.local_id, &mut |def| {