@Nullable
    private static String computeConstant(@NotNull PsiExpression expression) {
      Object constantExpression = ExpressionUtils.computeConstantExpression(expression);
      if (constantExpression != null)  {
        return String.valueOf(constantExpression);
      } else {
        PsiLocalVariable variable = resolveLocalVariable(expression);
        if(variable == null) return null;
        PsiElement parent = variable.getParent();
        PsiExpression initializer = variable.getInitializer();
        if(parent == null || initializer == null) return null;
        if(!isEffectivelyFinal(variable, parent, null)) return null;
        Object initializerConstant = ExpressionUtils.computeConstantExpression(initializer);
        if(initializerConstant == null) return null;
        return String.valueOf(initializerConstant);
      }
    }
@Nullable
    private static String computeConstant(@NotNull PsiExpression expression)