namespace Microsoft.ML.Data
{
    public sealed class CompositeLoaderEstimator<TSource, TLastTransformer> : IDataLoaderEstimator<TSource, CompositeDataLoader<TSource, TLastTransformer>>
        where TLastTransformer, class, ITransformer
    {
        public CompositeLoaderEstimator<TSource, TNewTrans> Append<TNewTrans>(IEstimator<TNewTrans> estimator)
            where TNewTrans, class, ITransformer;
    }
}