GWt 2.2.0 Lock Title Bar in CellTable

I need to freeze the first row (title bar) of the data in CellTable so that users can scroll through the data, but still see the labels in the header row. The title bar should not scroll when the user scrolls up and down, and the title bar should not scroll when the user scrolls left and right.

Is there any predefined method in api from CellTable so that I can use it directly. Can anyone suggest an easy way to get this.

Thanks in advance

Surya