$nextRev = $this->revisionLookup->getNextRevision( $oldRev );
if ( !$nextRev ) {
// Oldid given and is the latest revision for this title; clear the timestamp.
$nextRev = $this->revisionLookup->getNextRevision( $oldRev );
if ( !$nextRev ) {
// Oldid given and is the latest revision for this title; clear the timestamp.