How to assign multiple values to the filter value in list views through apex code

Question

I've an requirement where I'm adding a new filter for the list views through apex code since we have 1000+ list views in prod. Below I've added a new filter where lead status not equal to closed and it worked

MetadataService.ListView listView = new MetadataService.ListView();
           MetadataService.ListViewFilter filter = new MetadataService.ListViewFilter();
           List<MetadataService.ListViewFilter> newFilterList = new List<MetadataService.ListViewFilter>();
           MetadataService.SharedTo share = new MetadataService.SharedTo();
           listView.columns = listColumns;
           listView.fullName = listType + '.' + g.DeveloperName;
           listView.label = g.Name;
           filter.field = 'LEAD.STATUS';
           filter.operation = 'notEqual';
           filter.value = closed;
           newFilterList.add(filter);

           listview.filters = newFilterList;
           listView.filterScope = 'Queue';

Now I want to add a new filter where lead status is equal to 'new', 'unactioned' etc. How can I assign multiple values to the filter.value in the code. Please help