public Timestamped<Resource> getResource(Context file) throws IOException {
for (int i = 0;i < file.paths.length;i++) {
ReadFileSystem compound = compounds[i];
Object p = file.paths[i];
if (p != null) {
PathType type = compound.typeOf(p);
if (type == PathType.FILE) {
return compound.getResource(p);
}
}
}