public static TransformableUnboundColumnBuilder <RecordT, bool> TransformableDefault <RecordT>( this ValueContainingUnboundColumnBuilder <RecordT, bool> self, params GrouperDefOrAggregatorDef <bool>[] additionalGrouperOrAggr) where RecordT : new() { return(self.Transformable(x => DataGridColumnController.ForBool(x, additionalGrouperOrAggr))); }