$scopedLock = $dbw->getScopedLockAndFlush( $lockKey, __METHOD__, 10 );
if ( !$scopedLock ) {
$this->setLastError( "Could not acquire lock '$lockKey'" );
$scopedLock = $dbw->getScopedLockAndFlush( $lockKey, __METHOD__, 10 );
if ( !$scopedLock ) {
$this->setLastError( "Could not acquire lock '$lockKey'" );