@Override public <KEY> DatasetBuilder2<IN, KEY> keyBy(UnaryFunction<IN, KEY> keyExtractor) { return new DatasetBuilder2<>(name, input, keyExtractor); } }
@Override public <KEY> DatasetBuilder2<IN, KEY> keyBy(UnaryFunction<IN, KEY> keyExtractor) { return new DatasetBuilder2<>(name, input, keyExtractor); } }