Thoughts on a good approach to put HeaderRows inside a <thead /> element?

[zsiswick]

I'm trying to figure out a graceful way to create sticky headers within my spreadsheet component. I see there is an override available for the Table component, but I'm seeing the component just has access to children which could be any combination of HeaderRowComponent and RowComponent. Is there a relatively sane way of wrapping the HeaderRowComponent with a <thead /> element? In my case, I only have the HeaderRowComponent as the first row of my spreadsheet.