public void AddItem(string name)
        {
            var item = new PlaceholderItem()
            {
                Name = name
            };

            Items.Add(item);
        }
        public void AddItemWithValue(string name, string value)
        {
            var item = new PlaceholderItem()
            {
                Name  = name,
                Value = value
            };

            Items.Add(item);
        }
        public void AddItem(string name, string adoQuery, string returnProperty)
        {
            var item = new PlaceholderItem()
            {
                Name           = name,
                AdoQuery       = adoQuery,
                ReturnProperty = returnProperty
            };

            Items.Add(item);
        }