public java.util.Date getUtteranceFirstRecordedInAggregationDuration() {
        return this.utteranceFirstRecordedInAggregationDuration;
    }
<p>
The date and time that the utterance was first recorded in the time window for aggregation. An utterance may have
been sent to Amazon Lex before that time, but only utterances within the time window are counted.
</p>

@return The date and time that the utterance was first recorded in the time window for aggregation. An utterance
        may have been sent to Amazon Lex before that time, but only utterances within the time window are
        counted.
aws-java-sdk-lexmodelsv2/src/main/java/com/amazonaws/services/lexmodelsv2/model/AggregatedUtterancesSummary.java