public long getTimestamp() {
        deserialize();
        return time;
    }
<p>Returns the timestamp of the document to put.</p>

<p>Only used by the feed pipeline; use {@link #getPersistedTimestamp()} to get the
persisted backend timestamp of the document as observed by the client of a running
visitor operation.</p>
documentapi/src/main/java/com/yahoo/documentapi/messagebus/protocol/PutDocumentMessage.java