$realOps = $this->substOpBatchPaths( $ops, $backend );
if ( $this->asyncWrites && !$this->hasVolatileSources( $ops ) ) {
DeferredUpdates::addCallableUpdate(
$realOps = $this->substOpBatchPaths( $ops, $backend );
if ( $this->asyncWrites && !$this->hasVolatileSources( $ops ) ) {
DeferredUpdates::addCallableUpdate(