AsmHighlighter.AsmHighlighterLanguageService.GetColorableItem C# (CSharp) Method

        public override int GetColorableItem(int index, out IVsColorableItem item)
        {
            if (index < 1 || index > m_colorableItems.Length)
                throw new ArgumentOutOfRangeException(nameof(index));

            item = m_colorableItems[index-1];
            return VSConstants.S_OK;
        }