int suggestSize = request.paramAsInt("suggest_size", 5);
if (searchSourceBuilder == null) {
searchSourceBuilder = new SearchSourceBuilder();
}
String suggestMode = request.param("suggest_mode");
searchSourceBuilder.suggest().addSuggestion(
termSuggestion(suggestField).field(suggestField).text(suggestText).size(suggestSize)
.suggestMode(suggestMode)
);
}