add_icon_filter method

add_icon_filter

Adds an icon filter.

def add_icon_filter(self, field_index, icon_set_type, icon_id):
    ...

Parameter	Type	Description
field_index	int	The integer offset of the field on which you want to base the filter (from the left of the list; the leftmost field is field 0).
icon_set_type	`IconSetType`	The icon set type.
icon_id	int	The icon id.

Only supports to add the icon filter. Not supports checking which row is visible if the filter is icon filter.