Support for custom filtering list in checkbox filters in SfDataGrid Validated

I have columns in my SfDataGrid that represent a list of items, rendered as a String where those values are joined. I would like to be able to filter rows by selecting individual elements that can be present on those lists and then filter based on List.contains() instead of just String.equals(). So I would need a way to specify the list of options that appear in the checkboxes in checkbox filtering dialog, and then a custom filter function that gives me the selected option and the row and lets me return true or false to say if the row should be filtered or not. Both of these could be added to FilterPopupMenuOptions.