{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"let"}]}
    let source_root_id = db.file_source_root(root_file).source_root_id(db);
    let root_file = krate.root_file(db);
    !db.source_root(source_root_id).source_root(db).is_library