@Nullable Object computeExpression(PsiElement expression,
                                     boolean throwExceptionOnOverflow,
                                     @Nullable PsiConstantEvaluationHelper.AuxEvaluator auxEvaluator);
@Nullable Object computeExpression(PsiElement expression,
                                     boolean throwExceptionOnOverflow,
                                     @Nullable PsiConstantEvaluationHelper.AuxEvaluator auxEvaluator)