@NotNull
  @Override
  public PsiElementVisitor buildVisitor(@NotNull ProblemsHolder holder, boolean isOnTheFly) {
    return PsiUtil.isModuleFile(holder.getFile()) ? new ExportedToSelfVisitor(holder) : PsiElementVisitor.EMPTY_VISITOR;
  }
@NotNull
  @Override
  public PsiElementVisitor buildVisitor(@NotNull ProblemsHolder holder, boolean isOnTheFly)