public java.util.Date getCreationTimestamp() {
        return this.creationTimestamp;
    }
<p>
The number of milliseconds since the Unix epoch time until the creation of the collection. The Unix epoch time is
00:00:00 Coordinated Universal Time (UTC), Thursday, 1 January 1970.
</p>

@return The number of milliseconds since the Unix epoch time until the creation of the collection. The Unix epoch
        time is 00:00:00 Coordinated Universal Time (UTC), Thursday, 1 January 1970.
aws-java-sdk-rekognition/src/main/java/com/amazonaws/services/rekognition/model/DescribeCollectionResult.java