Add "show more" feature for Virtualized rows

[IlyaSavich]

Hi, I'm currently looking fro adding such a feature for my tables. The idea is: I'm using grouping and virtualized rows as I have too much items per group, and I don't want to render them on scroll but rather to show some button/row-with-single-button "show more" by clicking on which I will get more items within a group. I cannot find such a feature in doc. Could you pls point me how can i do that or can we consider it as a feature request ?

[IlyaSavich]

more likely i need feature to limit amount of rows per group