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