@Override
  public @Nullable ObjectStubTree<?> readOrBuild(@NotNull Project project, @NotNull VirtualFile vFile, @Nullable PsiFile psiFile) {
    ObjectStubTree<?> fromIndices = readFromVFile(project, vFile);
    if (fromIndices != null) {
      return fromIndices;
    }

    return build(project, vFile, psiFile);
  }
@Override
  public @Nullable ObjectStubTree<?> readOrBuild(@NotNull Project project, @NotNull VirtualFile vFile, @Nullable PsiFile psiFile)