TableModel in MPS

I need a table and I used therefore the TableModel from jetbrains.mps.lang.editor.table.runtime. I use my own implementation therfore but I'm just curious because I found also another interface with an abstract implementation available, TableModel_optimized. I'm not quite sure how to use it, in the editor I just have table and hierarchycal table available where at table I have to return TableModel.

So do I have to implement this myself, so that it shows in the editor and returns a TableModel_optimized? Do I benefit anyhow from the TableModel_optimized (just curious because optimized :))