{"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"file_set.add_file_set(vec![VfsPath::new_virtual_path(\"/foo/bar\".into())]);"}]}
    file_set.add_file_set(vec![VfsPath::new_virtual_path("/foo/bar".into())]);
    file_set.add_file_set(vec![VfsPath::new_virtual_path("/foo".into())]);
    let file_set = file_set.build();