Hi, Team. 

With the current implementation of the TreeList, if there is a vertical scrollbar in the component, this scrollbar starts from the header cells.

Can you consider making the scrollbar top position start below the header cells of the TreeList? As a reference, you can use the behavior of the vertical scrollbar in the Grid.  

I would like to be able to select elements in the tree using shift: click on element #1, then click with shift on element #20 - all elements from 1 to 20 are selected

I also want Ctrl + A to work - select all

In general, this is necessary for all grids, tables, etc.

Describe the bug
The TreeListDataStateChangeEvent type currently has the following props:

• component, dataState and event

While its props should be:

• component, data and event

Expected behavior

The types defined in the TreeListDataStateChangeEvent should be component, data, and event