LayoutFarm.WebDom.CssRuleSet.PrepareExpression C# (CSharp) Method

        public void PrepareExpression(CssCombinatorOperator combinator)
        {
            switch (combinator)
            {
                default:
                    {
                    }
                    break;
                case CssCombinatorOperator.AdjacentSibling:
                    {
                        throw new NotSupportedException();
                    }
                    break;
                case CssCombinatorOperator.Child:
                    {
                        throw new NotSupportedException();
                    }
                    break;
                case CssCombinatorOperator.Descendant:
                    {
                        throw new NotSupportedException();
                    }
                    break;
                case CssCombinatorOperator.GeneralSibling:
                    {
                        throw new NotSupportedException();
                    }
                    break;
                case CssCombinatorOperator.List:
                    {
                        CssCompundElementSelector combinatorExpr = new CssCompundElementSelector(combinator);
                        combinatorExpr.LeftSelector = this.elementSelector;
                        this.elementSelector = combinatorExpr;
                    }
                    break;
            }
        }
        public void AddSelector(CssSimpleElementSelector primExpr)