code: public static JavaPairRDD<Text, BytesPairWritable> combineFilesForSequenceFile(JavaSparkContext sc, String path1,
                      String path2, PathToKeyConverter converter) {
          return combineFilesForSequenceFile(sc, path1, path2, converter, converter);
      }
docs: Same as {@link #combineFilesForSequenceFile(JavaSparkContext, String, String, PathToKeyConverter, PathToKeyConverter)}
  but with the PathToKeyConverter used for both file sources