this.transaction = Preconditions.checkNotNull(transaction);
this.shardActor = shardActor;
this.shardStats = shardStats;
this.datastoreContext = datastoreContext;
this.transactionID = Preconditions.checkNotNull(transactionID);
this.transaction = Preconditions.checkNotNull(transaction);
this.shardActor = shardActor;
this.shardStats = shardStats;
this.datastoreContext = datastoreContext;
this.transactionID = Preconditions.checkNotNull(transactionID);