bool
If ``group_suggestion_responses`` is false, and there are
multiple ``feature_configs`` in ``event based suggestion``
or StreamingAnalyzeContent, we will try to deliver
suggestions to customers as soon as we get new suggestion.
Different type of suggestions based on the same context will
be in separate Pub/Sub event or
``StreamingAnalyzeContentResponse``.
If ``group_suggestion_responses`` set to true. All the
suggestions to the same participant based on the same
context will be grouped into a single Pub/Sub event or
StreamingAnalyzeContentResponse.