in athena-udfs-textanalytics/src/main/java/com/amazonaws/athena/udf/textanalytics/TextAnalyticsUDFHandler.java [868:876]
private String getKeyPhraseValues(List<KeyPhrase> keyPhrases) throws Exception
{
List<String> values = new ArrayList<String>();
for (KeyPhrase keyPhrase : keyPhrases) {
values.add(keyPhrase.text());
}
String resultjson = toJSON(values);
return resultjson;
}