private static boolean isFieldUnreferenced(final PsiField field) {
    try (AccessToken ignore = SlowOperations.knownIssue("IDEA-307701, EA-722024")) {
      return ReferencesSearch.search(field).forEach(t -> {
        PsiFile f = t.getElement().getContainingFile();
        if (f != null && f.getFileType().equals(GuiFormFileType.INSTANCE)) {
          return true;
        }
        PsiMethod method = PsiTreeUtil.getParentOfType(t.getElement(), PsiMethod.class);
        if (method != null && method.getName().equals(AsmCodeGenerator.SETUP_METHOD_NAME)) {
          return true;
        }
        return false;
      });
    }
    catch (IndexNotReadyException e) {
      return false;
    }
  }
private static boolean isFieldUnreferenced(final PsiField field)