public void setCreatedAt(java.util.Date createdAt) {
        this.createdAt = createdAt;
    }
<p>
A timestamp showing the speaker's creation time.
</p>

@param createdAt
       A timestamp showing the speaker's creation time.
aws-java-sdk-voiceid/src/main/java/com/amazonaws/services/voiceid/model/SpeakerSummary.java