public async Task <ScopeStack> GetScopeStackAsync(int offset, CancellationToken cancellationToken)
        {
            var line            = textDocument.GetLineByOffset(offset);
            var highligthedLine = await GetHighlightedLineAsync(line, cancellationToken).ConfigureAwait(false);

            offset -= line.Offset;
            foreach (var segment in highligthedLine.Segments)
            {
                if (segment.Offset <= offset && segment.EndOffset >= offset)
                {
                    return(segment.ScopeStack);
                }
            }
            return(defaultScopeStack);
        }