Configures the filtering behavior of the TreeGrid.
Specifies the columns to be searched at initial rendering of the TreeGrid. You can also get the columns that were currently filtered.
Defaults to 
Defines the filter types. The available options are,
Parent: Initiates filter operation after Enter key is pressed.
Child: Initiates filter operation after a certain time interval. By default, time interval is 1500 ms.
Defaults to Parent
If ignoreCase set to true, then search ignores the diacritic characters or accents while filtering.
Defaults to false
A key word for searching the TreeGrid content.
operators is used to override the default operators in filter menu. This should be defined by type wise
(string, number, date and boolean). Based on the column type, this customize operator list will render in filter menu.
Defaults to null