public static void markFileIndexed(@Nullable VirtualFile file,
                                     @Nullable FileContent fc) {
    // TODO restore original assertion
    if (fc != null && ourIndexedFile.get() != null) {
      throw new AssertionError("Reentrant indexing");
    }
    ourIndexedFile.set(file);
  }
public static void markFileIndexed(@Nullable VirtualFile file,
                                     @Nullable FileContent fc)