private static void RunPattern(IYateDataContext dataContext, object model, CQ domObjects, IPattern pattern)
        {
            //try/finally leaves the data context in the same state as when we started with it hopefully.
            try
            {
                dataContext.PushValue(model);

                foreach (var domObject in domObjects)
                {
                    var htmlFragment = CQ.CreateFragment(pattern.HtmlFragment);

                    foreach (var atRule in pattern.AtRules)
                    {
                        atRule.Render(htmlFragment, dataContext);
                    }

                    foreach (var ruleSet in pattern.RuleSets)
                    {
                        ruleSet.Render(htmlFragment, dataContext);
                    }

                    //append those mama jammas
                    foreach(var frag in htmlFragment)
                    {
                        domObject.AppendChild(frag);
                    }
                }
            }
            finally
            {
                dataContext.PopValue();
            }
        }