this.delegate = Preconditions.checkNotNull(delegate);
this.debugContext = Preconditions.checkNotNull(debugContext);
this.transactionId = Preconditions.checkNotNull(transactionId);
}
this.delegate = Preconditions.checkNotNull(delegate);
this.debugContext = Preconditions.checkNotNull(debugContext);
this.transactionId = Preconditions.checkNotNull(transactionId);
}