private static @CheckForNull Set<String> members(@CheckForNull FsNode entry) { return null == entry ? null : entry.getMembers(); }
final Set<String> members = entry.getMembers(); return null == members ? null : members.toArray(new String[members.size()]);
final FsNode entry = stat(path); final Set<String> set; if (null == entry || null == (set = entry.getMembers())) throw new NotDirectoryException(path.toString());