check sitecore implements a template

Implements

 public static bool Implements(this Item item, params ID[] templateIds)
        {
            if (templateIds.Length == 0)
            {
                throw new ArgumentOutOfRangeException("templateIds", "must include at least one template");
            }
            if (item == null || item.Template == null)
            {
                return false;
            }

            var items = new List<TemplateItem> { item.Template };
            int index = 0;

            // flatten the template tree during search
            while (index < items.Count)
            {
                // check for match
                TemplateItem template = items[index];
                if (templateIds.Contains(template.ID))
                {
                    return true;
                }

                // add base templates to the list
                items.AddRange(template.BaseTemplates);

                // inspect next template
                index++;
            }

            // nothing found
            return false;
        }