*/
final class PingPongFuture extends AbstractCheckedFuture<Void, TransactionCommitFailedException> {
protected PingPongFuture(final ListenableFuture<Void> delegate) {
*/
final class PingPongFuture extends AbstractCheckedFuture<Void, TransactionCommitFailedException> {
protected PingPongFuture(final ListenableFuture<Void> delegate) {