public FaceDetection withTimestamp(Long timestamp) {
        setTimestamp(timestamp);
        return this;
    }
<p>
Time, in milliseconds from the start of the video, that the face was detected. Note that <code>Timestamp</code>
is not guaranteed to be accurate to the individual frame where the face first appears.
</p>

@param timestamp
       Time, in milliseconds from the start of the video, that the face was detected. Note that
       <code>Timestamp</code> is not guaranteed to be accurate to the individual frame where the face first
       appears.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-rekognition/src/main/java/com/amazonaws/services/rekognition/model/FaceDetection.java