in src/main/java/com/amazonaws/kda/flink/benchmarking/util/KDSProducerUtil.java [176:180]
public static List<String> tokenizeStrings(String str, String separator) {
List<String> tokenList = Collections.list(new StringTokenizer(str, separator)).stream()
.map(token -> (String) token).collect(Collectors.toList());
return tokenList;
}