namespace Microsoft.ML
{
    public static class CustomMappingCatalog : Object
    {
        public static IDataView FilterByStatefulCustomPredicate<TSrc, TState>(this DataOperationsCatalog catalog, IDataView input, Func<TSrc, TState, ?> filterPredicate, Action<TState> stateInitAction)
            where TSrc, new(), class
            where TState, new(), class;
    }
}