@Nullable
  public static Pair<PsiElement, String> evaluateConstantExpression(@NotNull PsiElement expression) {
    PsiConstantEvaluationHelper helper = JavaPsiFacade.getInstance(expression.getProject()).getConstantEvaluationHelper();
    Object result = helper.computeConstantExpression(expression);
    if (result instanceof String) {
      return Pair.create(expression, (String)result);
    }
    return null;
  }
@Nullable
  public static Pair<PsiElement, String> evaluateConstantExpression(@NotNull PsiElement expression)