public java.util.Date getCreatedAt() {
        return this.createdAt;
    }
<p>
The time an image set is created. Sample creation date is provided in <code>1985-04-12T23:20:50.52Z</code>
format.
</p>

@return The time an image set is created. Sample creation date is provided in
        <code>1985-04-12T23:20:50.52Z</code> format.
aws-java-sdk-medicalimaging/src/main/java/com/amazonaws/services/medicalimaging/model/ImageSetsMetadataSummary.java