@Nullable
  static SearchScope calculateOverallRestrictedUseScope(@NotNull List<ScopeOptimizer> optimizers, @NotNull PsiElement element) {
    boolean seen = false;
    SearchScope acc = null;
    for (ScopeOptimizer optimizer : optimizers) {
      ProgressManager.checkCanceled();
      SearchScope scope = optimizer.getRestrictedUseScope(element);
      if (scope != null) {
        if (!seen) {
          seen = true;
          acc = scope;
        }
        else {
          acc = acc.intersectWith(scope);
        }
      }
    }
    return seen ? acc : null;
  }
@Nullable
  static SearchScope calculateOverallRestrictedUseScope(@NotNull List<ScopeOptimizer> optimizers, @NotNull PsiElement element)