BetterCms.Configuration.CmsSearchConfigurationElement.this C# (CSharp) Метод

        public KeyValueElement this[int index]
        {
            get
            {
                return (KeyValueElement)BaseGet(index);
            }
            set
            {
                if (BaseGet(index) != null)
                {
                    BaseRemoveAt(index);
                }
                BaseAdd(index, value);
            }
        }