deeplearning4j-data org.deeplearning4j 1.0.0-beta6 4.0.0 deeplearning4j-utility-iterators jar deeplearning4j-utility-iterators org.deeplearning4j deeplearning4j-util ${project.version} org.nd4j nd4j-api ${nd4j.version} test-nd4j-native test-nd4j-cuda-10.2