Configures the filtering behavior of the Gantt.
Specifies the columns to be filtered at initial rendering of the Gantt. You can also get the columns that were currently filtered.
Defaults to 
Defines the filter types. The available options are,
Parent: Shows the filtered record with parent record.
Child: Shows the filtered record with child record.
Both : shows the filtered record with both parent and child record.
None : Shows only filtered record.
Defaults to Parent
If ignoreAccent set to true, then filter ignores the diacritic characters or accents while filtering.
Defaults to false
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