public void setStartTimestamp(java.util.Date startTimestamp) {
        this.startTimestamp = startTimestamp;
    }
<p>
The starting timestamp in the range of timestamps for which to return fragments.
</p>
<p>
Only fragments that start exactly at or after <code>StartTimestamp</code> are included in the session. Fragments
that start before <code>StartTimestamp</code> and continue past it aren't included in the session. If
<code>FragmentSelectorType</code> is <code>SERVER_TIMESTAMP</code>, the <code>StartTimestamp</code> must be later
than the stream head.
</p>

@param startTimestamp
       The starting timestamp in the range of timestamps for which to return fragments. </p>
       <p>
       Only fragments that start exactly at or after <code>StartTimestamp</code> are included in the session.
       Fragments that start before <code>StartTimestamp</code> and continue past it aren't included in the
       session. If <code>FragmentSelectorType</code> is <code>SERVER_TIMESTAMP</code>, the
       <code>StartTimestamp</code> must be later than the stream head.
aws-java-sdk-kinesisvideo/src/main/java/com/amazonaws/services/kinesisvideo/model/ClipTimestampRange.java